Free Web Tools
A growing set of fast, private utilities that run entirely in your browser — nothing is uploaded, nothing is stored. Built by Patrick Bushe.
2x2 Equation Solver
Solve two linear equations in two unknowns with Cramer's rule, view the determinant, and check each solution privately in your browser without uploads.
Open Tool arrow_forward3D Distance Calculator
Free 3d distance calculator with labeled inputs and an immediate result. It finds straight-line distance between spatial points privately in your browser.
Open Tool arrow_forward3x3 System of Equations Solver
Free 3x3 system of equations solver using Cramer determinants to find x, y, and z from an augmented matrix, calculated privately in your browser.
Open Tool arrow_forward401k Contribution Calculator
Free 401k contribution calculator that estimates employee contribution, employer match, and annual retirement savings. Runs locally in your browser for...
Open Tool arrow_forwardA/B Test Significance Lite
Free A/B test significance calculator using conversion counts, sample sizes, uplift, z-score, and confidence estimate. Runs locally in your browser for...
Open Tool arrow_forwardA1C Average Glucose Converter
Convert A1C to estimated average glucose using the ADAG formula. Everything is computed locally in your browser, with no uploads, no tracking, and no sign-ups.
Open Tool arrow_forwardA1C to Average Glucose Converter
Free a1c to average glucose converter with labeled inputs and an immediate result. It estimates eAG from a laboratory A1C percentage privately in your browser.
Open Tool arrow_forwardA1Z26 Cipher
Free A1Z26 cipher tool: convert letters to their alphabet numbers and back, computed locally in your browser.
Open Tool arrow_forwardAbbreviation Expander
Free abbreviation expander replaces common workplace and internet short forms with full phrases. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardABV Fermentation Calculator
Free abv fermentation calculator with labeled inputs and an immediate result. It estimates alcohol by volume from gravity readings privately in your browser.
Open Tool arrow_forwardABV from OG FG Calculator
Calculate approximate alcohol by volume from original gravity and final gravity readings. It runs entirely in your browser — no uploads, accounts, or tracking.
Open Tool arrow_forwardAcceleration Converter
Free acceleration converter: convert between m/s², ft/s², g-force, and gal, computed locally in your browser.
Open Tool arrow_forwardAccessible Font Size Checker
Check font size and line-height for readable body copy.
Open Tool arrow_forwardAccessible Link Style Checker
Free accessible link style checker that runs locally in your browser.
Open Tool arrow_forwardAccessible Text Color Finder
Free accessible text color finder that compares black, white, and custom text over a background with WCAG contrast ratios.
Open Tool arrow_forwardAcres to Hectares Converter
Convert acres to hectares and hectares to acres using the international area relationship, with six-significant-figure results in your browser.
Open Tool arrow_forwardAcronym Generator
Free acronym generator for cleaning, transforming, and checking pasted text. Process content locally in your browser without uploads.
Open Tool arrow_forwardAd Copy Length Checker
Free ad copy length checker that runs locally in your browser.
Open Tool arrow_forwardAd Copy Variator
Free ad copy variator that spins one message into benefit, proof, urgency, objection, and direct-response ad angles. Runs locally in your browser for...
Open Tool arrow_forwardAd Frequency Calculator
Calculate average ad frequency by dividing total impressions by unique reach. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardAdd Business Days Calculator
Free add business days calculator: skip weekends to find the date a set number of working days from a start date, computed in your browser.
Open Tool arrow_forwardAdd Line Numbers
Free add line numbers for cleaning, transforming, and checking pasted text. Process content locally in your browser without uploads.
Open Tool arrow_forwardAdd Subtract Days Calculator
Free add subtract days calculator that calculates dates and times locally in your browser with specific examples, limits, and copy-ready output.
Open Tool arrow_forwardAdd Time Calculator
Free add time calculator: add hours and minutes to a start time and see the resulting time, in your browser.
Open Tool arrow_forwardAdditive Grade Curve
Free additive grade curve calculator that shifts every score by the same points until the highest reaches 100, calculated privately in your browser.
Open Tool arrow_forwardADFGX Cipher
Free ADFGX cipher combines a keyed Polybius fraction with keyword column transposition. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardAdler-32 Checksum Calculator
Calculate an eight-digit Adler-32 checksum from UTF-8 text with the standard prime modulus, plus a clear non-security warning in your browser.
Open Tool arrow_forwardAffiliate Commission Calculator
Calculate affiliate commission and the merchant share from an order value and commission rate. It runs entirely in your browser, with no uploads or accounts.
Open Tool arrow_forwardAffine Cipher
Free affine cipher tool: encode and decode text with the affine substitution formula, computed locally in your browser.
Open Tool arrow_forwardAge Calculator
Free age calculator that calculates dates and times locally in your browser with specific examples, limits, and copy-ready output. No account required.
Open Tool arrow_forwardAge Difference Calculator
Free age difference calculator: find the gap in years and days between two birth dates, computed in your browser.
Open Tool arrow_forwardAge in Days Weeks Hours
Free age in days weeks hours that calculates dates and times locally in your browser with specific examples, limits, and copy-ready output. No account required.
Open Tool arrow_forwardAge in Months Calculator
Free age in months calculator: find an exact age in months and days from a birth date, computed in your browser.
Open Tool arrow_forwardAge on Other Planets
Free planet age calculator: find how old you are in the years of other planets, computed locally in your browser.
Open Tool arrow_forwardAgency Blended Rate Calculator
Calculate a blended hourly rate from senior and junior rates and hours. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardAI Crawler Robots.txt Builder
Generate robots.txt blocks for common AI crawler user agents.
Open Tool arrow_forwardAI Prompt Cleaner
Turn rough AI prompts into clearer structured instructions with task, context, constraints, output format, and quality checks.
Open Tool arrow_forwardAIDA Copy Framework Builder
Free AIDA copy framework builder that turns an offer into attention, interest, desire, and action prompts for faster drafts. Runs locally in your browser...
Open Tool arrow_forwardAir Fryer Converter
Free air fryer conversion calculator: adapt oven temperature and time for an air fryer, computed locally in your browser.
Open Tool arrow_forwardAlberti Cipher Disk
Free Alberti cipher disk rotates a movable alphabet by interval, offset, and step controls. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardAlcohol Proof Converter
Free alcohol proof converter that converts US proof and alcohol by volume. Review labeled assumptions and a worked result calculated privately in your browser.
Open Tool arrow_forwardAlpha Compositing Calculator
Use this free alpha compositing calculator in your browser to blend foreground alpha over a background into one opaque hex. Output stays private and local.
Open Tool arrow_forwardAlt Text Auditor
Free alt text auditor that scans pasted HTML for image tags with missing, empty, duplicated, or suspiciously long alt text. Runs locally in browser.
Open Tool arrow_forwardAlt Text Helper
Free alt text helper that runs locally in your browser.
Open Tool arrow_forwardAmortization Schedule Builder
Free amortization schedule builder that previews monthly principal, interest, balance, and total loan cost. Runs locally in your browser for private planning.
Open Tool arrow_forwardAnagram Solver
Free anagram solver for cleaning, transforming, and checking pasted text. Process content locally in your browser without uploads.
Open Tool arrow_forwardAnalogous Color Generator
Free analogous color generator: find neighboring colors on the wheel for a harmonious palette, in your browser.
Open Tool arrow_forwardAnalogous Palette Builder
Free analogous palette builder that creates neighboring hue swatches around a base color with adjustable spread.
Open Tool arrow_forwardAnchor Text Diversity Checker
Free anchor text diversity checker that groups exact, partial, branded, URL, and generic anchors from a pasted backlink list. Runs locally in browser.
Open Tool arrow_forwardAngle Converter
Free angle converter that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardAnnual Contract Value Calculator
Calculate total and annual contract value from a monthly amount and a term. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardAnnual to Monthly Cost Converter
Free annual to monthly cost converter for subscriptions, contracts, yearly fees, and equivalent monthly budgets. Runs locally in your browser for private...
Open Tool arrow_forwardANSI Code Stripper
Free ANSI stripper: remove terminal color and formatting escape codes from log output to get clean plain text, in your browser.
Open Tool arrow_forwardAPA Citation Generator
Format a basic APA-style web or article citation from author, year, title, publication, and URL fields, then copy it in your browser without uploads.
Open Tool arrow_forwardAPI Key Generator
Free API key generator: create random keys and tokens in hex, alphanumeric, or URL-safe form using secure randomness, in your browser.
Open Tool arrow_forwardAPI Response Mock Generator
Generate mock JSON API responses with fields, status, pagination, and error variants for prototyping and frontend testing.
Open Tool arrow_forwardAPR to APY Calculator
Free apr to apy calculator with labeled inputs and an immediate result. It converts nominal APR to compounded annual yield privately in your browser.
Open Tool arrow_forwardAPR to APY Converter
Convert APR to APY with a manual compounding frequency so savings and loan rates can be compared. It runs entirely in your browser, with no uploads or accounts.
Open Tool arrow_forwardAPY to APR Calculator
Free apy to apr calculator with labeled inputs and an immediate result. It converts effective annual yield to nominal APR privately in your browser.
Open Tool arrow_forwardAPY to APR Converter
Convert APY to nominal APR for a selected compounding frequency with transparent local math. It runs entirely in your browser, with no uploads or accounts.
Open Tool arrow_forwardArc Length Calculator
Free arc length calculator with labeled inputs and an immediate result. It finds circular arc length from radius and angle privately in your browser.
Open Tool arrow_forwardArea Converter
Free area converter that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardArithmetic Sequence Calculator
Free arithmetic sequence calculator: find the nth term and the sum of the series from the first term and common difference, in your browser.
Open Tool arrow_forwardArmstrong Number Checker
Free Armstrong number checker that raises each decimal digit to the digit count, totals the powers, and verifies the number in your browser.
Open Tool arrow_forwardArmy Body Fat Calculator
Free U.S. Army body fat calculator using the circumference method, computed locally in your browser.
Open Tool arrow_forwardARR Calculator
Free annual recurring revenue calculator: convert MRR to ARR and see monthly and daily figures, in your browser.
Open Tool arrow_forwardArticle/BlogPosting Schema Builder
Free article schema builder that creates BlogPosting JSON-LD with headline, author, dates, image, URL, and publisher fields locally. Runs locally.
Open Tool arrow_forwardASCII Art from Image
Free ASCII art from image tool that converts uploaded image brightness into copyable text characters locally in your browser for quick output.
Open Tool arrow_forwardASCII Table Reference
Free searchable ASCII table reference for decimal, hexadecimal, binary, and printable characters. Look up code points locally.
Open Tool arrow_forwardAscii85 Encoder & Decoder
Free Ascii85 encoder and decoder: convert text to compact Ascii85 and back, computed locally in your browser.
Open Tool arrow_forwardAspect Ratio Calculator
Calculate missing width, height, and simplified ratio for images and layouts.
Open Tool arrow_forwardAtbash Cipher
Free Atbash cipher: reverse the alphabet so A becomes Z and B becomes Y. Encode and decode with the same step, all in your browser.
Open Tool arrow_forwardAtmospheres to PSI Converter
Convert standard atmospheres to PSI and PSI to atmospheres using the exact reference pressure, with six-significant-figure results in your browser.
Open Tool arrow_forwardAtoms to Moles Calculator
Free atoms to moles calculator: convert between a number of particles and moles using Avogadro’s number, in your browser.
Open Tool arrow_forwardAudience Overlap Calculator
Estimate the shared and unique members of an audience from a size and an overlap percentage. It runs entirely in your browser, with no uploads or accounts.
Open Tool arrow_forwardAudio Buffer Size Calculator
Calculate audio latency from a buffer size in samples and the sample rate. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardAudio Length from Size
Free audio length from size that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardAuto Loan Calculator
Free auto loan calculator for car price, down payment, trade-in, APR, term, monthly payment, and interest. Runs locally in your browser for private planning.
Open Tool arrow_forwardAutokey Cipher
Free autokey cipher encodes and decodes letters with a keyword extended by the message. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardAverage Order Value Calculator
Free average order value calculator: find AOV from total revenue and number of orders, computed in your browser.
Open Tool arrow_forwardAverage Revenue Per User Calculator
Calculate ARPU by dividing total revenue by the number of users. Everything is computed locally in your browser, with no uploads, no tracking, and no sign-ups.
Open Tool arrow_forwardAverage Word Length Calculator
Free average word length calculator reports token count, characters, and mean token length. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardBAB Copy Framework Builder
Free BAB copy framework builder that maps before, after, and bridge sections for landing pages, emails, and ads. Runs locally in your browser for private...
Open Tool arrow_forwardBacksplash Tile Count Calculator
Calculate tiles and boxes for a backsplash from area, coverage, box size, and waste. It runs entirely in your browser — no uploads, accounts, or tracking.
Open Tool arrow_forwardBacon Cipher
Free Baconian cipher tool: encode text into five-letter A/B groups and decode it back, computed locally in your browser.
Open Tool arrow_forwardBaker’s Percentage Calculator
Free baker’s percentage calculator: turn hydration and ingredient percentages into weights from your flour weight, in your browser.
Open Tool arrow_forwardBalloon Loan Calculator
Calculate interest-only balloon loan payments, total paid before maturity, and final balance. It runs entirely in your browser, with no uploads or accounts.
Open Tool arrow_forwardBandwidth Delay Product
Free bandwidth delay product calculator that multiplies link rate by round-trip time and reports exact bits, bytes, and MiB in your browser.
Open Tool arrow_forwardBar Duration Calculator
Calculate the duration of a bar from beats per bar and the tempo. Everything is computed locally in your browser, with no uploads, no tracking, and no sign-ups.
Open Tool arrow_forwardBarcode Generator (Code 128 & EAN-13)
Free barcode generator for Code 128 and EAN-13. Type your data and get a scannable SVG barcode, encoded entirely in your browser with no uploads.
Open Tool arrow_forwardBarista FIRE Gap Calculator
Calculate the portfolio needed after part-time income reduces annual expenses. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardBase-N Converter
Free base-N number converter: convert a number between any bases from 2 to 36, computed locally in your browser.
Open Tool arrow_forwardBase32 Encoder & Decoder
Free Base32 encoder and decoder using the RFC 4648 alphabet, computed locally in your browser.
Open Tool arrow_forwardBase32 Encoder Decoder
Free Base32 encoder and decoder for RFC 4648 text values. Convert strings locally with padding support in your browser.
Open Tool arrow_forwardBase45 Encoder and Decoder
Encode UTF-8 text with RFC 9285 Base45 or decode Base45 groups with range checks, entirely offline with copy-ready output in your browser safely now.
Open Tool arrow_forwardBase58 Encoder & Decoder
Free Base58 encoder and decoder using the Bitcoin alphabet, converting hex bytes, computed locally in your browser.
Open Tool arrow_forwardBase58 Encoder Decoder
Free Base58 encoder and decoder using the Bitcoin alphabet. Convert text values locally without ambiguous characters.
Open Tool arrow_forwardBase62 Encoder & Decoder
Free Base62 converter: encode a number to Base62 and decode it back, using digits and letters, in your browser.
Open Tool arrow_forwardBase64 Encoder & Decoder
Encode text to Base64 or decode Base64 back to readable text with Unicode support.
Open Tool arrow_forwardBase64 File Converter
Free base64 file converter that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardBase64 to Image Converter
Free Base64 to image converter: paste a Base64 or data URI and preview and download the image, in your browser.
Open Tool arrow_forwardBase64URL Converter
Free Base64URL converter: switch between standard Base64 and URL-safe Base64, adjusting characters and padding, locally in your browser.
Open Tool arrow_forwardBase91 Encoder and Decoder
Encode UTF-8 text as compact basE91 or decode valid basE91 back to text with strict local validation and one-click copying in your browser safely now.
Open Tool arrow_forwardBaseline Grid Generator
Use this free baseline grid generator in your browser to calculate line height and baseline guides from a font size. Output stays private and local.
Open Tool arrow_forwardBasic Auth Encoder
Free basic auth encoder for a focused result. It encodes a username and password as an HTTP Basic credential with private local processing in your browser.
Open Tool arrow_forwardBasic Auth Header Generator
Free Basic auth header generator that UTF-8 encodes a username and password, joins them correctly, and returns Base64 without uploads in your browser.
Open Tool arrow_forwardBcrypt Cost Estimator
Free bcrypt cost estimator that explains rounds, relative work, and expected scaling. Compare cost factors without hashing secrets.
Open Tool arrow_forwardBearing Calculator
Free compass bearing calculator: find the initial bearing from one coordinate to another, in your browser.
Open Tool arrow_forwardBeat Duration Calculator
Calculate the duration of one beat from the tempo in BPM. Everything is computed locally in your browser, with no uploads, no tracking, and no sign-ups.
Open Tool arrow_forwardBeaufort Cipher
Encode or decode text with the reciprocal Beaufort cipher and a repeating alphabetic key, preserving nonletters privately in your browser without uploads.
Open Tool arrow_forwardBefore After Copy Rewriter
Turn plain offer copy into before-after messaging with pain, desired outcome, bridge, and CTA drafts. Runs locally.
Open Tool arrow_forwardBernoulli Equation Calculator
Calculate downstream pressure from two speeds and elevations using steady incompressible Bernoulli flow, with local output in your browser safely now.
Open Tool arrow_forwardBifid Cipher
Free Bifid cipher fractionates keyed Polybius coordinates and recombines them by period. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardBill Splitter
Free bill splitter that divides shared costs by people and optional weights for rent, trips, meals, or group expenses. Runs locally in your browser for...
Open Tool arrow_forwardBillable Hours Rounder
Free billable hours rounder that rounds time entries to common billing increments and estimates invoice value. Runs locally in your browser for private...
Open Tool arrow_forwardBinary IP Converter
Free IPv4 converter between dotted decimal, dotted binary, a 32-bit integer, and hexadecimal — enter any form and get the rest, in your browser.
Open Tool arrow_forwardBinary Text Converter
Free binary text converter for cleaning, transforming, and checking pasted text. Process content locally in your browser without uploads.
Open Tool arrow_forwardBinaural Beats Generator
Free binaural beats generator: play two tones to create a beat frequency for focus or relaxation, in your browser.
Open Tool arrow_forwardBingo Grid Square Calculator
Calculate the number of squares from grid rows and columns. Everything is computed locally in your browser, with no uploads, no tracking, and no sign-ups.
Open Tool arrow_forwardBinomial Probability Calculator
Free binomial probability calculator: find the chance of k successes in n trials at probability p, in your browser.
Open Tool arrow_forwardBirthday Paradox Calculator
Free birthday paradox calculator: find the probability that two people in a group share a birthday, in your browser.
Open Tool arrow_forwardBirthstone Lookup
Free birthstone lookup: find the traditional and modern birthstone for any birth month, in your browser.
Open Tool arrow_forwardBit Shift Visualizer
Free bit shift visualizer: enter a number and a shift amount to see the binary before and after a left or right shift, and the resulting value, in your browser.
Open Tool arrow_forwardBitrate Calculator
Free bitrate calculator that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardBits & Bytes Converter
Free bits and bytes converter: convert between bits, bytes, and their decimal multiples, computed locally in your browser.
Open Tool arrow_forwardBitwise Calculator
Free bitwise calculator: apply AND, OR, XOR, NOT, and shifts to two integers and see the result in decimal, binary, and hex, in your browser.
Open Tool arrow_forwardBlind Slat Count Calculator
Calculate the number of blind slats from window height and slat pitch. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardBlog Outline Expander
Expand a topic, keyword, audience, and bullet notes into a structured blog outline and writing brief. Runs locally in your browser.
Open Tool arrow_forwardBlog Title Generator
Free blog title generator that turns a topic, audience, and angle into practical headline formulas for posts, guides, and SEO content. Runs locally in your...
Open Tool arrow_forwardBlog To Social Post Splitter
Split a pasted blog outline into short social post ideas.
Open Tool arrow_forwardBlurhash Style Preview
Free blur preview generator that downsamples an uploaded image into a tiny blurred placeholder canvas and exports a PNG preview locally online.
Open Tool arrow_forwardBMI Calculator
Free BMI calculator for adults that converts pounds and inches into body mass index, standard category bands, and a clear local estimate for planning.
Open Tool arrow_forwardBMI Prime Calculator
Free BMI Prime calculator: express your BMI as a ratio to the upper-normal limit, computed locally in your browser.
Open Tool arrow_forwardBMR Calculator
Free BMR calculator using the Mifflin St Jeor equation to estimate resting daily calories from age, sex, height, and weight inputs in your browser.
Open Tool arrow_forwardBoard Foot Calculator
Free board foot calculator for lumber: enter thickness, width, length, and quantity to get board feet and total, computed locally in your browser.
Open Tool arrow_forwardBody Fat Estimator (Navy Method)
Free body-fat percentage estimator using the U.S. Navy tape-measure formula (neck, waist, hips, height) — computed privately in your browser.
Open Tool arrow_forwardBody Frame Size Calculator
Free body frame size calculator: find your frame from height and wrist circumference, computed in your browser.
Open Tool arrow_forwardBody Surface Area Calculator
Free body surface area calculator with labeled inputs and an immediate result. It estimates adult body surface area with Mosteller privately in your browser.
Open Tool arrow_forwardBody Surface Area Mosteller
Calculate body surface area. Every value is computed locally in your browser, so nothing is uploaded, stored, or shared, and no account is needed.
Open Tool arrow_forwardBond Current Yield Calculator
Free bond current yield calculator with labeled inputs and an immediate result. It compares annual coupon income with market price privately in your browser.
Open Tool arrow_forwardBook Cipher
Free book cipher maps message words to first matching positions in a supplied reference passage. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardBorder Radius Generator
Free CSS border-radius generator: set each corner and copy the CSS, with a live preview, in your browser.
Open Tool arrow_forwardBorder Radius Previewer
Adjust each corner, preview the shape, and copy CSS border-radius values.
Open Tool arrow_forwardBox Shadow Generator
Tune offset, blur, spread, opacity, and color, then copy CSS instantly.
Open Tool arrow_forwardBoyle’s Law Calculator
Free Boyle’s law calculator: solve P1V1 = P2V2 for the missing pressure or volume, in your browser.
Open Tool arrow_forwardBrand Color Distance
Free brand color distance checker that compares two hex colors with RGB distance and a practical similarity label.
Open Tool arrow_forwardBrand Voice Checklist
Generate a brand voice checklist with tone, vocabulary, proof points, banned words, and publishing checks.
Open Tool arrow_forwardBreadcrumbList Schema Builder
Free breadcrumb schema builder that converts label and URL rows into valid BreadcrumbList JSON-LD for page navigation and SEO. Runs locally in browser.
Open Tool arrow_forwardBreak-Even Calculator
Free break-even calculator that runs locally in your browser.
Open Tool arrow_forwardBreakage Revenue Calculator
Estimate breakage revenue and expected redemptions from a balance and a breakage rate. It runs entirely in your browser — no uploads, accounts, or tracking.
Open Tool arrow_forwardBreakpoint Planner
Generate media query snippets from breakpoint values.
Open Tool arrow_forwardBrick Calculator
Free brick calculator: estimate how many bricks a wall needs from its area, with waste allowance, in your browser.
Open Tool arrow_forwardBrine Percentage Calculator
Free brine percentage calculator with labeled inputs and an immediate result. It calculates salt as a percentage of water weight privately in your browser.
Open Tool arrow_forwardBrine Salt Calculator
Calculate salt grams for a brine from water weight and target salinity percent with private math. It runs entirely in your browser, with no uploads or accounts.
Open Tool arrow_forwardBroken Internal Link List Cleaner
Clean messy broken-link crawl exports into deduplicated fix lists grouped by source URL, target URL, and status code.
Open Tool arrow_forwardBTU Calculator
Free BTU calculator: estimate the cooling or heating capacity a room needs from its size, computed locally in your browser.
Open Tool arrow_forwardBTU to Joules Converter
Convert British thermal units to joules and joules to BTU using the standard thermochemical factor, with precise energy results in your browser.
Open Tool arrow_forwardBubble Text Generator
Free bubble text generator: convert letters and numbers into circled Unicode characters that paste into bios and posts, in your browser.
Open Tool arrow_forwardBudget 50/30/20 Splitter
Free 50/30/20 budget splitter that divides take-home pay into needs, wants, savings, and debt payoff categories. Runs locally in your browser for private...
Open Tool arrow_forwardBug Report Template Generator
Generate a clear bug report template with steps to reproduce, expected result, actual result, severity, and environment.
Open Tool arrow_forwardBulk Discount Tiers Builder
Free bulk discount tiers builder that creates quantity breaks, unit prices, savings, and total revenue by tier. Runs locally in your browser for private...
Open Tool arrow_forwardBulk Find And Replace
Free bulk find and replace for cleaning, transforming, and checking pasted text. Process content locally in your browser without uploads.
Open Tool arrow_forwardBulk Title Meta Reviewer
Review title tags and meta descriptions in bulk with length and rewrite prompts.
Open Tool arrow_forwardBulk URL Slug Generator
Free bulk url slug generator that runs locally in your browser.
Open Tool arrow_forwardBullet List Maker
Free bullet list maker for cleaning, transforming, and checking pasted text. Process content locally in your browser without uploads.
Open Tool arrow_forwardBullet Point Generator
Turn paragraphs into concise bullet points with local sentence parsing, cleanup rules, and adjustable output length.
Open Tool arrow_forwardBundle Price Calculator
Calculate a bundle price and savings from the separate item total and a discount. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardBuoyancy Force Calculator
Calculate Archimedes buoyant force, object weight, and net vertical force from fluid density and displaced volume privately in your browser.
Open Tool arrow_forwardBusiness Days Calculator
Free business days calculator that calculates dates and times locally in your browser with specific examples, limits, and copy-ready output.
Open Tool arrow_forwardBusiness Hours Capacity Calculator
Calculate work capacity hours from workdays and productive hours per day. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardBusiness Name Generator
Free business name generator that creates descriptive, local, premium, modern, and founder-friendly name ideas. Runs locally in your browser for private...
Open Tool arrow_forwardButter Grams to Cups Converter
Convert butter grams to US cups and cups to grams using the common 227-gram cup convention, with recipe-ready results calculated in your browser.
Open Tool arrow_forwardCabinet Paint Area Calculator
Calculate total cabinet door area from a door count and average area each. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardCabinet Pull Placement Calculator
Calculate the pull center position on a drawer from width and a placement percentage. It runs entirely in your browser — no uploads, accounts, or tracking.
Open Tool arrow_forwardCAC Payback Period Calculator
Free cac payback period calculator with labeled inputs and an immediate result. It estimates months to recover acquisition cost privately in your browser.
Open Tool arrow_forwardCache-Control Header Builder
Free Cache-Control header builder that safely validates visibility, freshness, revalidation, immutable, no-store, and stale reuse in your browser.
Open Tool arrow_forwardCaesar Cipher
Free Caesar cipher tool: shift letters by any amount to encode or decode a message, computed locally in your browser.
Open Tool arrow_forwardCAGR Calculator
Free CAGR calculator: find the compound annual growth rate of an investment over time, computed locally in your browser.
Open Tool arrow_forwardCake Serving Calculator
Calculate cake servings by dividing the top area by the area per serving. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardCalorie Deficit Calculator
Free calorie deficit calculator: find the daily deficit needed for a target weekly weight loss, in your browser.
Open Tool arrow_forwardCalorie Deficit Planner
Free calorie deficit planner that estimates timeline from pounds to lose, daily deficit, and the classic 3500 calorie shortcut in your browser.
Open Tool arrow_forwardCalories Activity MET Calculator
Calculate calories burned from MET value, body weight, and minutes with the standard exercise formula. It runs locally in your browser with no uploads.
Open Tool arrow_forwardCalories Burned Calculator
Free calories burned calculator using MET values for common activities, from your weight and duration, computed in your browser.
Open Tool arrow_forwardCalories Burned Walking
Free calories burned walking calculator from your weight, time, and pace, computed locally in your browser.
Open Tool arrow_forwardCampaign Budget Split Calculator
Split a campaign budget across creative, media, landing pages, testing, tools, and contingency.
Open Tool arrow_forwardCandidate Scorecard Builder
Create a simple candidate scorecard with criteria, evidence notes, and decision prompts.
Open Tool arrow_forwardCanonical URL Builder
Normalize URLs, remove tracking parameters, and copy canonical tags.
Open Tool arrow_forwardCap Rate Calculator
Free capitalization rate calculator: find a property’s cap rate from net operating income and value, in your browser.
Open Tool arrow_forwardCapacitor Code Decoder
Free capacitor code decoder: enter a three-digit ceramic capacitor code to get the capacitance in pF, nF, and µF, computed locally in your browser.
Open Tool arrow_forwardCapacitor Energy Calculator
Free capacitor energy calculator: find the energy stored in a capacitor from capacitance and voltage, computed in your browser.
Open Tool arrow_forwardCapacitors in Parallel Calculator
Calculate equivalent capacitance for a positive list of parallel capacitor values, with count and total computed locally in your browser safely now.
Open Tool arrow_forwardCapacitors in Series Calculator
Calculate equivalent capacitance for any positive list of series capacitor values and inspect the reciprocal sum privately in your browser safely now.
Open Tool arrow_forwardCapitalize Each Word
Free tool to capitalize the first letter of every word (title case), computed locally in your browser.
Open Tool arrow_forwardCar Loan Calculator
Free car loan calculator: find the monthly payment and total interest from price, down payment, rate, and term, in your browser.
Open Tool arrow_forwardCarats to Grams Converter
Convert carats to grams and grams to carats with the exact metric gemstone definition, decimal inputs, and a practical reference table in your browser.
Open Tool arrow_forwardCarb Cycling Day Calculator
Calculate carb calories and grams from daily calories and a carb percentage. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardCarpet Roll Length Calculator
Calculate linear feet of carpet needed from room area and roll width. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardCase Study Outline Builder
Free case study outline builder that structures challenge, solution, result, proof, and quote prompts for client success stories. Runs locally in your...
Open Tool arrow_forwardCase Style Converter
Convert text into camelCase, PascalCase, snake_case, kebab-case, and CONSTANT_CASE.
Open Tool arrow_forwardCash Drawer Counter
Free cash drawer counter: enter the count of each bill and coin to total the till, computed locally in your browser.
Open Tool arrow_forwardCatalan Number Calculator
Free catalan number calculator that computes a Catalan sequence value, with labeled assumptions and an immediate result calculated privately in your browser.
Open Tool arrow_forwardCD Ladder Calculator
Split savings across certificate terms and estimate weighted average yield. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardCeiling Fan Size Helper
Free ceiling fan size helper that suggests a fan span band from room area. Review labeled assumptions and a worked result calculated privately in your browser.
Open Tool arrow_forwardCelsius to Fahrenheit Converter
Convert Celsius to Fahrenheit and Fahrenheit to Celsius with the exact affine formulas and clear six-significant-figure results in your browser.
Open Tool arrow_forwardCelsius to Kelvin Converter
Convert Celsius to kelvins and kelvins to Celsius using the exact 273.15 offset, with precise scientific results calculated in your browser.
Open Tool arrow_forwardCentimeters to Feet Converter
Convert centimeters to decimal feet and feet to centimeters using the international-foot definition, with clear, precise results in your browser.
Open Tool arrow_forwardCentimeters to Inches Converter
Convert centimeters to inches and inches to centimeters with an exact metric factor, six-significant-figure results, and a quick table in your browser.
Open Tool arrow_forwardCentripetal Force Calculator
Free centripetal force calculator with labeled inputs and an immediate result. It calculates inward force for circular motion privately in your browser.
Open Tool arrow_forwardChaocipher
Free Chaocipher encodes and decodes with two dynamically permuted twenty-six-letter alphabets. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardCharacter Counter Pro
Count characters, words, sentences, paragraphs, and bytes.
Open Tool arrow_forwardCharacter Frequency Counter
Free character frequency counter for cleaning, transforming, and checking pasted text. Process content locally in your browser without uploads.
Open Tool arrow_forwardCharles’s Law Calculator
Free Charles’s law calculator: solve V1/T1 = V2/T2 for the missing volume or temperature, in your browser.
Open Tool arrow_forwardCheckerboard Generator
Free checkerboard pattern generator: create a two-colour checkerboard image, downloadable as PNG, in your browser.
Open Tool arrow_forwardChi-Square Goodness-of-Fit
Free chi-square goodness-of-fit with labeled inputs and an immediate result. It compares observed and expected category counts privately in your browser.
Open Tool arrow_forwardChi-Square Independence Test
Free chi-square independence calculator for a contingency table, returning expected counts, statistic, and degrees of freedom in your browser.
Open Tool arrow_forwardChicago Citation Generator
Free Chicago citation generator orders author, title, publisher, year, and URL details. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardChinese Remainder Theorem Solver
Free Chinese remainder theorem solver for simultaneous congruences with pairwise coprime moduli, verified and calculated privately in your browser.
Open Tool arrow_forwardChinese Zodiac Finder
Free Chinese zodiac finder: find your animal sign and element from your birth year, computed locally in your browser.
Open Tool arrow_forwardChmod Calculator
Free chmod calculator: toggle read, write, and execute for owner, group, and others to get the octal and symbolic permission strings, in your browser.
Open Tool arrow_forwardCholesterol Unit Converter
Free cholesterol unit converter with labeled inputs and an immediate result. It converts cholesterol from mg/dL to mmol/L privately in your browser.
Open Tool arrow_forwardChurn Calculator
Free churn calculator that runs locally in your browser.
Open Tool arrow_forwardChurn Rate Calculator
Free churn rate calculator: find your customer churn and retention rate over a period, computed locally in your browser.
Open Tool arrow_forwardCIDR Aggregate Calculator
Free CIDR aggregate calculator that normalizes IPv4 blocks, removes contained entries, and recursively merges aligned siblings in your browser.
Open Tool arrow_forwardCIDR Calculator
Free CIDR calculator: convert a prefix length to its subnet mask, wildcard mask, and address and host counts, and see the full prefix table, in your browser.
Open Tool arrow_forwardCIDR Containment Checker
Free CIDR containment checker that tests whether an IPv4 address or complete child CIDR lies inside a parent range with full range math in your browser.
Open Tool arrow_forwardCIDR Overlap Checker
Free CIDR overlap checker that normalizes two IPv4 blocks, detects intersection, and reports the exact shared address range in your browser.
Open Tool arrow_forwardCIDR Split Calculator
Free CIDR split calculator that normalizes an IPv4 parent and enumerates equal child networks for a longer prefix with exact network math in your browser.
Open Tool arrow_forwardCinder Block Calculator
Estimate concrete block count from wall length, height, block face area, and waste percent. It runs entirely in your browser, with no uploads or accounts.
Open Tool arrow_forwardCircle Calculator
Free circle calculator: find area, circumference, and diameter from a radius, computed locally in your browser.
Open Tool arrow_forwardCircle Image Cropper
Use this free circle image cropper in your browser to crop a local raster image to a centered transparent circle. Output stays private and local.
Open Tool arrow_forwardCircle Sector Area Calculator
Free circle sector calculator: find the area and arc length of a sector from radius and angle, in your browser.
Open Tool arrow_forwardClass Attendance Percent Calculator
Calculate meetings attended and missed from total meetings and an attendance rate. It runs entirely in your browser — no uploads, accounts, or tracking.
Open Tool arrow_forwardClient Onboarding Checklist
Generate a client onboarding checklist with kickoff, access, assets, approvals, and communication steps.
Open Tool arrow_forwardClient Red Flag Checklist
Generate a client-fit checklist for reviewing risky projects before accepting work.
Open Tool arrow_forwardCloset Rod Capacity Calculator
Calculate hanger capacity from rod length and spacing per hanger. Everything is computed locally in your browser, with no uploads, no tracking, and no sign-ups.
Open Tool arrow_forwardClothing Size Converter
Free clothing size converter that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardCMYK ↔ RGB Converter
Free CMYK and RGB converter: switch a color between print CMYK percentages and screen RGB or hex values, computed locally in your browser.
Open Tool arrow_forwardCocktail Batch Calculator
Scale cocktail ingredient ounces by servings and dilution percent. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardCocktail Ratio Scaler
Free cocktail scaler: enter a recipe in parts and a batch size to get exact volumes for each ingredient, computed locally in your browser.
Open Tool arrow_forwardCode Line Counter
Free code line counter that estimates code, blank lines, and comments for pasted snippets. Review LOC locally in your browser.
Open Tool arrow_forwardCoefficient of Variation Calculator
Free coefficient of variation calculator: find relative variability as a percentage of the mean, in your browser.
Open Tool arrow_forwardCoffee Brew Water Calculator
Calculate coffee and water grams from brew ratio and desired cups with private kitchen math. It runs entirely in your browser, with no uploads or accounts.
Open Tool arrow_forwardCoffee Extraction Yield Calculator
Calculate coffee extraction yield from beverage mass, TDS, and dose. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardCoffee Ratio Calculator
Free coffee ratio calculator: enter water and a brew ratio to get the grams of coffee, or work back from a cup count, in your browser.
Open Tool arrow_forwardCohen D Effect Size Calculator
Free cohen d effect size calculator with labeled inputs and an immediate result. It standardizes a two-group mean difference privately in your browser.
Open Tool arrow_forwardCoin Change Calculator
Free coin change calculator: break an amount into the fewest US coins and bills, computed locally in your browser.
Open Tool arrow_forwardCoin Flip
Free online coin flip: flip one coin or many at once and see the heads and tails tally, generated fairly in your browser.
Open Tool arrow_forwardCoin Flip Probability Calculator
Free coin flip probability calculator: find the odds of getting a number of heads in a series of flips, in your browser.
Open Tool arrow_forwardCold Email First Line Generator
Generate honest cold email opening lines from prospect, company, trigger, and outreach reason. Private browser-only sales tool.
Open Tool arrow_forwardCold Email Template Builder
Free cold email template builder that creates opener, relevance, pitch, proof, and call-to-action drafts from your inputs. Runs locally in your browser for...
Open Tool arrow_forwardCollatz Sequence Calculator
Free Collatz sequence calculator that applies the odd and even rules, lists every term, and reports step count and peak privately in your browser.
Open Tool arrow_forwardColor Blindness Simulator
Free color blindness simulator for checking a palette under protanopia, deuteranopia, tritanopia, and grayscale views.
Open Tool arrow_forwardColor Code Namer
Free color code namer that finds the nearest common CSS named color for a hex value locally in your browser.
Open Tool arrow_forwardColor Contrast Checker
Check any two colors against WCAG AA/AAA accessibility contrast ratios instantly.
Open Tool arrow_forwardColor Contrast Matrix
Compare multiple foreground and background color pairings.
Open Tool arrow_forwardColor Inverter
Free color inverter: find the inverted (negative) color of any hex, with swatches, computed in your browser.
Open Tool arrow_forwardColor Luminance Matcher
Use this free color luminance matcher in your browser to adjust one color lightness until it matches another relative luminance. Output stays private and local.
Open Tool arrow_forwardColor Mixer
Free color mixer that blends two hex colors by ratio and returns the mixed color plus CSS color-mix style output.
Open Tool arrow_forwardColor Name to Hex
Free CSS color name lookup: type a named color like tomato or slategray to get its exact hex and RGB values, in your browser.
Open Tool arrow_forwardColor Palette Generator
Generate tints, shades, copyable hex values, and CSS variables from one base color.
Open Tool arrow_forwardColor Palette Image Exporter
Free palette image exporter that renders pasted hex colors as a downloadable PNG swatch strip in your browser.
Open Tool arrow_forwardColor Palette Image Generator
Free color palette image generator: turn a list of hex colours into a labelled swatch image, downloadable as PNG, in your browser.
Open Tool arrow_forwardColor Picker Formats
Free color picker that converts one picked color into HEX, RGB, HSL, HWB, and OKLCH-style values for fast CSS handoff.
Open Tool arrow_forwardColor Scale Generator
Free color scale generator: create evenly spaced steps between two colors and copy the hex values, computed locally in your browser.
Open Tool arrow_forwardColor Temperature Adjuster
Free color temperature adjuster that warms or cools a hex color and shows the adjusted value with a live preview.
Open Tool arrow_forwardColor to Grayscale
Free color to grayscale converter that compares average, luminosity, and lightness formulas for one selected color.
Open Tool arrow_forwardColumn Name Standardizer
Standardize pasted column names into clean snake_case style.
Open Tool arrow_forwardColumn Row Transposer
Free row and column transposer for pasted comma, tab, or pipe-delimited text. Swap tables locally without opening a spreadsheet.
Open Tool arrow_forwardColumnar Transposition Cipher
Free columnar transposition cipher reorders text by alphabetically ranked keyword columns. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardCombinations & Permutations Calculator
Free nCr and nPr calculator: enter n and r to get combinations and permutations without overflowing on large factorials, in your browser.
Open Tool arrow_forwardCombinations with Repetition
Free combinations with repetition calculator: count multiset selections from n items, in your browser.
Open Tool arrow_forwardCombined Gas Law Calculator
Free combined gas law calculator: solve P1V1/T1 = P2V2/T2 for a missing value, in your browser.
Open Tool arrow_forwardComma-Separated to List
Free tool to split a comma-separated string into a list of lines, computed locally in your browser.
Open Tool arrow_forwardComment Stripper
Free comment stripper for JavaScript, CSS, and hash-comment snippets. Remove common comments locally before copying.
Open Tool arrow_forwardComplementary Color Calculator
Free complementary color calculator: find the opposite color on the wheel for any hex, with swatches, in your browser.
Open Tool arrow_forwardComplementary Color Finder
Free complementary color finder that rotates a hex color around the color wheel and shows copy-ready pairing values.
Open Tool arrow_forwardComplete the Square Calculator
Free complete the square calculator with labeled inputs and an immediate result. It rewrites a monic quadratic in vertex form privately in your browser.
Open Tool arrow_forwardCompound Interest Calculator
Free compound interest calculator with starting balance, contributions, rate, years, and future value estimates. Runs locally in your browser for private...
Open Tool arrow_forwardCompound Interest Contributions
Calculate future value with starting balance, recurring contributions, return, and years. It runs entirely in your browser — no uploads, accounts, or tracking.
Open Tool arrow_forwardCompression Ratio Calculator
Free compression ratio calculator with an immediate result. It calculates engine compression from swept and clearance volume privately in your browser.
Open Tool arrow_forwardConcrete Volume Calculator
Free concrete calculator: enter length, width, and depth to get the volume in cubic yards and metres plus an estimated bag count, in your browser.
Open Tool arrow_forwardConditional Probability Calculator
Free conditional probability calculator: find P(A given B) from the joint and marginal probabilities, in your browser.
Open Tool arrow_forwardCone Volume Calculator
Free cone volume calculator: find the volume, slant height, and surface area of a cone, in your browser.
Open Tool arrow_forwardConfetti Image Generator
Free confetti image generator: create a festive scattered confetti image, downloadable as PNG, in your browser.
Open Tool arrow_forwardConic Gradient Generator
Free conic gradient generator for pie-style backgrounds, color wheels, badges, and CSS art with copy-ready output.
Open Tool arrow_forwardContent Angle Generator
Generate practical content angles for a topic, offer, or audience.
Open Tool arrow_forwardContent Brief Generator
Turn a topic into a simple SEO content brief and outline.
Open Tool arrow_forwardContent Calendar Idea Planner
Generate content calendar ideas with themes, formats, calls to action, and weekly publishing structure.
Open Tool arrow_forwardContent Gap Brainstormer
Generate content gap ideas from your offer, audience, existing topics, and competitor notes. Private browser-only planning tool.
Open Tool arrow_forwardContent Refresh Checklist
Generate a content refresh checklist for stale posts, landing pages, and SEO pages.
Open Tool arrow_forwardContent Repurposing Checklist
Free content repurposing checklist that turns one asset into post, email, short video, lead magnet, and sales enablement ideas. Runs locally in your browser...
Open Tool arrow_forwardContraction Expander
Free contraction expander replaces common English apostrophe forms with their full wording. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardContraction MRR Calculator
Calculate contraction MRR and the remaining MRR from downgrades. Everything is computed locally in your browser, with no uploads, no tracking, and no sign-ups.
Open Tool arrow_forwardContractor Day Rate Calculator
Calculate a contractor day rate from a project budget and billable days. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardContrast Badge Checker
Free WCAG contrast checker: pick text and background colors to see the ratio and AA/AAA pass or fail badges, computed locally in your browser.
Open Tool arrow_forwardContribution Margin Calculator
Free contribution margin calculator: find the amount and percentage each sale contributes after variable costs, computed in your browser.
Open Tool arrow_forwardConversion Rate Calculator
Free conversion rate calculator that turns visitors, leads, sales, and revenue into funnel conversion and value metrics. Runs locally in your browser for...
Open Tool arrow_forwardCookie Header Parser
Free Cookie header parser that handles semicolon pairs, quoted values, empty values, and percent decoding into structured JSON in your browser.
Open Tool arrow_forwardCooking Measurement Converter
Free cooking measurement converter that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardCorrelation Calculator
Free Pearson correlation coefficient calculator: measure the linear relationship between two data sets, computed in your browser.
Open Tool arrow_forwardCorrelation Matrix Calculator
Free correlation matrix calculator that treats each line as a variable and returns every Pearson pairwise coefficient privately in your browser.
Open Tool arrow_forwardCORS Header Builder
Free CORS header builder that safely validates one static origin, methods, request headers, credentials, Vary, and preflight age in your browser.
Open Tool arrow_forwardCost of Living Comparator
Free cost of living comparator that uses manual index values to compare equivalent salary between two cities. Runs locally in your browser for private planning.
Open Tool arrow_forwardCost Per Unit Calculator
Free cost per unit calculator: find the price of a single unit from a total cost and quantity, in your browser.
Open Tool arrow_forwardCost-Plus Pricing Calculator
Free cost-plus pricing calculator that turns unit cost, overhead, and target margin into a recommended selling price. Runs locally in your browser for...
Open Tool arrow_forwardCoulomb’s Law Calculator
Free Coulomb’s law calculator: find the electrostatic force between two charges at a distance, computed in your browser.
Open Tool arrow_forwardCount Occurrences
Free tool to count how many times a word or phrase appears in text, computed locally in your browser.
Open Tool arrow_forwardCountdown Progress Calculator
Calculate days elapsed and remaining from a total and an elapsed percentage. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardCountdown Timer Builder
Free countdown timer builder that calculates dates and times locally in your browser with specific examples, limits, and copy-ready output. No account required.
Open Tool arrow_forwardCountdown to a Date
Free live countdown to any date and time: see days, hours, minutes, and seconds remaining, ticking in your browser.
Open Tool arrow_forwardCourse Schema Builder
Free Course schema builder that creates JSON-LD with course name, provider, description, URL, mode, and offer price for SEO. Runs locally in browser.
Open Tool arrow_forwardCPM CPC CPA Converter
Free CPM, CPC, and CPA converter that connects impressions, clicks, conversions, spend, and core ad efficiency metrics. Runs locally in your browser for...
Open Tool arrow_forwardCRC-16 CCITT-FALSE Calculator
Calculate CRC-16 CCITT-FALSE for UTF-8 text using polynomial 1021 and initial FFFF, with a known-vector result generated in your browser safely now.
Open Tool arrow_forwardCRC-16 MODBUS Calculator
Calculate CRC-16 MODBUS for UTF-8 text with initial value FFFF and reflected polynomial A001, returning lowercase hex locally in your browser.
Open Tool arrow_forwardCRC32 Calculator
Free CRC32 calculator for text snippets. Generate a standard hexadecimal CRC32 checksum locally in your browser.
Open Tool arrow_forwardCreator CPM Revenue Calculator
Estimate creator ad revenue from a view count and a CPM (revenue per thousand). Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardCredit Card Payoff Calculator
Free credit card payoff calculator that estimates months and interest from balance, APR, and monthly payment. Runs locally in your browser for private planning.
Open Tool arrow_forwardCredit Card Validator
Free credit card number validator: check a card number with the Luhn algorithm and detect the network, all locally with nothing stored or uploaded.
Open Tool arrow_forwardCredit Utilization Calculator
Calculate credit utilization from card balances and limits, plus the payoff needed to hit a target. It runs locally in your browser with no uploads.
Open Tool arrow_forwardCron Builder Visual
Free visual cron builder that combines minute, hour, day, month, and weekday fields into a cron expression locally.
Open Tool arrow_forwardCron Expression Explainer
Explain five-field cron expressions in plain English with field breakdowns and common preset examples. Browser-only utility.
Open Tool arrow_forwardCron Next Run Preview
Free cron next run preview that calculates dates and times locally in your browser with specific examples, limits, and copy-ready output. No account required.
Open Tool arrow_forwardCrontab Line Generator
Free crontab line generator for combining schedule fields with a command and optional output redirection locally.
Open Tool arrow_forwardCross Product Calculator
Free cross product calculator for two three-dimensional vectors, returning the perpendicular vector and its magnitude directly in your browser.
Open Tool arrow_forwardCrypto Profit Loss Calculator
Calculate crypto profit, ROI, and ending value from buy price, sell price, and quantity manually. It runs entirely in your browser, with no uploads or accounts.
Open Tool arrow_forwardCSP Header Builder
Free Content-Security-Policy builder: pick sources for each directive to assemble a valid CSP header string, generated locally in your browser.
Open Tool arrow_forwardCSS Accent Color Previewer
Use this free CSS accent color previewer in your browser to preview and copy accent-color CSS for native form controls. Output stays private and local.
Open Tool arrow_forwardCSS Animation Keyframes Builder
Free CSS keyframes builder for transform, opacity, and timing values. Generate animation CSS and preview it locally.
Open Tool arrow_forwardCSS Animation Stagger Generator
Use this free CSS animation stagger generator in your browser to generate nth-child animation delays for a chosen item count. Output stays private and local.
Open Tool arrow_forwardCSS Backdrop Filter Generator
Free CSS backdrop filter generator for blur, brightness, saturation, and translucent panels. Preview glass effects locally.
Open Tool arrow_forwardCSS Background Position Previewer
Use this free CSS background position previewer in your browser to preview and copy percentage background positioning CSS. Output stays private and local.
Open Tool arrow_forwardCSS Background Size Previewer
Use this free CSS background size previewer in your browser to preview cover contain or explicit background sizing CSS. Output stays private and local.
Open Tool arrow_forwardCSS Beautifier
Free CSS beautifier that expands compact CSS into readable lines. Format simple stylesheet snippets locally.
Open Tool arrow_forwardCSS Blend Mode Previewer
Free CSS blend mode previewer for mix-blend-mode and background-blend-mode values. Compare effects locally.
Open Tool arrow_forwardCSS Blob Generator
Free CSS blob generator for organic border-radius shapes. Adjust radii and preview copy-ready blob CSS locally.
Open Tool arrow_forwardCSS Border Image Generator
Use this free CSS border image generator in your browser to build gradient border-image CSS with slice, width, and repeat. Output stays private and local.
Open Tool arrow_forwardCSS Button Generator
Free css button generator that runs locally in your browser.
Open Tool arrow_forwardCSS Card Generator
Free css card generator that runs locally in your browser.
Open Tool arrow_forwardCSS Checkbox Radio Styler
Free CSS checkbox and radio styler for custom form controls. Preview accent colors, borders, and focus styles locally.
Open Tool arrow_forwardCSS Clamp Generator
Generate responsive clamp() values for font sizes, spacing, and layout dimensions.
Open Tool arrow_forwardCSS Clip Path Generator
Free CSS clip-path generator for polygon, circle, and inset shapes. Preview clipped blocks and copy CSS locally.
Open Tool arrow_forwardCSS Columns Generator
Free CSS columns generator for multi-column text layouts. Preview column count, gap, and rule styles locally.
Open Tool arrow_forwardCSS Container Query Generator
Use this free CSS container query generator in your browser to build named inline-size container query CSS. Output stays private and local. No upload is needed.
Open Tool arrow_forwardCSS Corner Smoothing Preview
Free CSS corner smoothing preview for radius and superellipse-style border-radius values. Compare shapes locally.
Open Tool arrow_forwardCSS Cubic Bezier Editor
Free CSS cubic-bezier editor for easing curves. Adjust control points, preview motion, and copy easing CSS locally.
Open Tool arrow_forwardCSS Cursor Preview
Free CSS cursor preview for common cursor values. Test hover cursor styles and copy the CSS locally in your browser.
Open Tool arrow_forwardCSS Easing Previewer
Free css easing previewer that runs locally in your browser.
Open Tool arrow_forwardCSS Filter Duotone Generator
Free CSS filter duotone generator for image tint experiments. Preview filter chains and copy CSS locally.
Open Tool arrow_forwardCSS Filter Generator
Build CSS filter snippets for blur, contrast, and saturation.
Open Tool arrow_forwardCSS Font Face Generator
Use this free CSS font face generator in your browser to build font-face CSS with source, format, weight, style, and display. Output stays private and local.
Open Tool arrow_forwardCSS Font Shorthand Builder
Use this free CSS font shorthand builder in your browser to assemble font CSS from style, weight, size, line height, and family. Output stays private and local.
Open Tool arrow_forwardCSS Font Stack Builder
Use this free CSS font stack builder in your browser to assemble an ordered quoted font-family fallback stack. Output stays private and local.
Open Tool arrow_forwardCSS Glassmorphism Generator
Free css glassmorphism generator that runs locally in your browser.
Open Tool arrow_forwardCSS Gradient Generator
Pick two colors and an angle, preview the gradient, and copy CSS.
Open Tool arrow_forwardCSS Grid Gap Visualizer
Free CSS grid gap visualizer for rows, columns, and gutter spacing. Preview gap values and copy grid CSS locally.
Open Tool arrow_forwardCSS Grid Generator
Generate basic CSS grid layouts from columns and gap values.
Open Tool arrow_forwardCSS Grid Template Areas Builder
Free CSS grid template areas builder for named layout regions. Edit rows and columns, preview the grid, and copy CSS locally.
Open Tool arrow_forwardCSS Inner Shadow Generator
Free CSS inner shadow generator for inset depth effects. Adjust offset, blur, spread, and color locally.
Open Tool arrow_forwardCSS Input Focus Ring Generator
Free accessible CSS focus ring generator for inputs and buttons. Tune color, width, and offset locally.
Open Tool arrow_forwardCSS Keyframe Bounce Shake Presets
Free CSS keyframe preset generator for bounce, shake, pulse, and wobble animations. Preview and copy CSS locally.
Open Tool arrow_forwardCSS Letter Spacing Previewer
Free CSS letter-spacing previewer for headings, labels, and UI text. Compare tracking values locally.
Open Tool arrow_forwardCSS Line Clamp Generator
Free CSS truncate and line-clamp generator for ellipsis text. Preview single-line and multi-line clamping locally.
Open Tool arrow_forwardCSS Line Height Previewer
Free CSS line-height previewer for comparing leading values. Tune readable paragraph spacing locally.
Open Tool arrow_forwardCSS List Style Previewer
Use this free CSS list style previewer in your browser to preview and copy list marker position type and spacing CSS. Output stays private and local.
Open Tool arrow_forwardCSS Loading Spinner Generator
Free CSS loading spinner generator with size, border, color, and speed controls. Preview and copy spinner CSS locally.
Open Tool arrow_forwardCSS Logical Properties Converter
Use this free CSS logical properties converter in your browser to translate physical spacing into logical block and inline CSS. Output stays private and local.
Open Tool arrow_forwardCSS Mask Generator
Free CSS mask generator for gradient fade masks. Preview image and content masks, then copy the CSS locally.
Open Tool arrow_forwardCSS Media Query Builder
Free CSS media query builder for width, orientation, and color scheme conditions. Compose responsive queries locally.
Open Tool arrow_forwardCSS Minifier
Free CSS minifier that removes comments and extra whitespace from pasted stylesheets. Minify snippets locally.
Open Tool arrow_forwardCSS Multiple Shadows Layerer
Free CSS multiple shadows layerer for stacked elevation effects. Generate layered box-shadow CSS locally.
Open Tool arrow_forwardCSS Neumorphism Generator
Free CSS neumorphism generator for soft raised and pressed UI shadows. Tune colors, distance, blur, and radius locally.
Open Tool arrow_forwardCSS Noise Grain Overlay
Free CSS noise and grain overlay generator using inline SVG turbulence. Create subtle texture backgrounds locally.
Open Tool arrow_forwardCSS nth-child Tester
Use this free CSS nth-child tester in your browser to evaluate an-plus-b nth-child formulas against a finite item list. Output stays private and local.
Open Tool arrow_forwardCSS Object Fit Previewer
Free CSS object-fit previewer for cover, contain, fill, none, and scale-down. Compare media framing locally.
Open Tool arrow_forwardCSS Object Position Previewer
Use this free CSS object position previewer in your browser to preview object positioning independently of object fit. Output stays private and local.
Open Tool arrow_forwardCSS OpenType Features Previewer
Use this free CSS OpenType features previewer in your browser to build font-feature-settings CSS from OpenType feature toggles. Output stays private and local.
Open Tool arrow_forwardCSS Outline Generator
Use this free CSS outline generator in your browser to build and preview CSS outline width style color and offset. Output stays private and local.
Open Tool arrow_forwardCSS Overflow Playground
Free CSS overflow playground for visible, hidden, scroll, auto, and clip values. Preview overflow behavior locally.
Open Tool arrow_forwardCSS Pattern Generator
Free CSS pattern generator using repeating gradients. Build stripes, grids, and dot patterns locally.
Open Tool arrow_forwardCSS Perspective Playground
Use this free CSS perspective playground in your browser to build perspective and 3D rotation CSS with transform origin. Output stays private and local.
Open Tool arrow_forwardCSS Position Sandbox
Free CSS position sandbox for static, relative, absolute, sticky, and fixed positioning. Preview offsets locally.
Open Tool arrow_forwardCSS Range Slider Styler
Free CSS range slider styler for track, thumb, size, and color values. Preview slider CSS locally in your browser.
Open Tool arrow_forwardCSS Ribbon Badge Generator
Free CSS ribbon and badge generator for corner labels. Customize text, color, and placement locally.
Open Tool arrow_forwardCSS Scroll Snap Generator
Use this free CSS scroll snap generator in your browser to build scroll container and item snap alignment CSS. Output stays private and local.
Open Tool arrow_forwardCSS Scrollbar Styler
Free CSS scrollbar styler for thumb, track, width, and radius values. Preview custom scrollbar CSS locally.
Open Tool arrow_forwardCSS Selection Style Generator
Use this free CSS selection style generator in your browser to build scoped selection foreground and background CSS. Output stays private and local.
Open Tool arrow_forwardCSS Shape Outside Generator
Use this free CSS shape outside generator in your browser to build circular or elliptical shape-outside CSS with shape margin. Output stays private and local.
Open Tool arrow_forwardCSS Skeleton Loader Generator
Free CSS skeleton loader generator with shimmer animation, radius, and row controls. Preview placeholder UI locally.
Open Tool arrow_forwardCSS Specificity Calculator
Free CSS specificity calculator that scores selectors by IDs, classes, attributes, pseudo-classes, and elements locally.
Open Tool arrow_forwardCSS Sticky Header Snippet
Free CSS sticky header snippet generator with offset, z-index, blur, and border options. Preview sticky header CSS locally.
Open Tool arrow_forwardCSS Subgrid Generator
Use this free CSS subgrid generator in your browser to build parent grid and child subgrid CSS tracks. Output stays private and local. No upload is needed.
Open Tool arrow_forwardCSS Text Decoration Generator
Use this free CSS text decoration generator in your browser to build underline overline and strike decoration CSS. Output stays private and local.
Open Tool arrow_forwardCSS Text Gradient Generator
Free CSS text gradient generator using background-clip text. Pick colors, angle, and preview copy-ready CSS locally.
Open Tool arrow_forwardCSS Text Shadow Generator
Free css text shadow generator that runs locally in your browser.
Open Tool arrow_forwardCSS Text Stroke Generator
Free CSS text stroke generator for outlined headlines. Adjust stroke width, fill, and outline colors locally.
Open Tool arrow_forwardCSS Toggle Switch Generator
Free CSS toggle switch generator for styled checkbox controls. Preview track, thumb, colors, and copy CSS locally.
Open Tool arrow_forwardCSS Tooltip Generator
Free CSS tooltip generator for pure-CSS hover tooltips. Customize position, color, and copy-ready CSS locally.
Open Tool arrow_forwardCSS Transform Generator
Generate rotate and scale transform CSS.
Open Tool arrow_forwardCSS Transition Generator
Free CSS transition generator for property, duration, easing, and delay. Preview hover transitions and copy CSS locally.
Open Tool arrow_forwardCSS Triangle Arrow Generator
Free CSS triangle and arrow generator using the border trick. Choose direction, size, and color locally.
Open Tool arrow_forwardCSS Triangle Generator
Free CSS triangle generator: make triangles with the border trick in any direction, size, and color, in your browser.
Open Tool arrow_forwardCSS Unit Converter
Convert px, rem, em, vw, vh, and percent values with configurable settings.
Open Tool arrow_forwardCSS Unit Sandbox
Free CSS unit sandbox for px, em, rem, ch, vw, and percent previews. Compare unit behavior locally.
Open Tool arrow_forwardCSS Variables Theme Builder
Free CSS variables theme builder for color, spacing, radius, and font tokens. Export a clean :root block locally.
Open Tool arrow_forwardCSS Wave Divider Generator
Free CSS wave divider generator that creates SVG section divider data URIs. Customize color and height locally.
Open Tool arrow_forwardCSS Writing Mode Previewer
Use this free CSS writing mode previewer in your browser to preview vertical and horizontal writing-mode with text orientation. Output stays private and local.
Open Tool arrow_forwardCSS Z Index Playground
Free CSS z-index playground for visualizing stacking order between overlapping elements. Adjust layer values locally.
Open Tool arrow_forwardCSV Cleaner
Trim CSV cells, normalize headers, and remove blank rows.
Open Tool arrow_forwardCSV Column Extractor
Free csv column extractor that runs locally in your browser.
Open Tool arrow_forwardCSV Column Reorder Tool
Free csv column reorder tool that runs locally in your browser.
Open Tool arrow_forwardCSV Column Stats
Free CSV column stats tool that calculates count, min, max, average, median, and sum for numeric columns in pasted CSV data locally with copy-ready JSON.
Open Tool arrow_forwardCSV Deduplicator by Column
Remove duplicate CSV rows by a selected column, keep the first row, and copy the cleaned output locally in your browser.
Open Tool arrow_forwardCSV Filter
Free CSV filter that keeps rows matching a column condition. Choose equals, contains, greater than, or less than and export filtered CSV locally.
Open Tool arrow_forwardCSV Header Renamer
Free CSV header renamer that applies bulk old-to-new header pairs while leaving row data untouched. Clean export names locally in your browser.
Open Tool arrow_forwardCSV Merger
Free CSV merger for combining multiple pasted CSV blocks into one clean file. Preserve one header row and join datasets locally in your browser.
Open Tool arrow_forwardCSV Row & Column Counter
Free CSV counter: count rows, columns, cells, and empty cells in CSV data, computed locally in your browser.
Open Tool arrow_forwardCSV Sort by Column
Free CSV sorter that orders rows by a selected column, ascending or descending. Handles numbers and text while preserving your header row locally.
Open Tool arrow_forwardCSV Splitter
Free CSV splitter that divides pasted rows into smaller chunks by row count. Keep headers on every part and copy each output in your browser.
Open Tool arrow_forwardCSV to HTML Table
Free CSV to HTML table converter: turn CSV data into a clean HTML table you can paste into a page, in your browser.
Open Tool arrow_forwardCSV to JavaScript Array
Free CSV to JavaScript array converter that parses quoted commas, escaped quotes, multiline fields, headers, and row arrays in your browser.
Open Tool arrow_forwardCSV to JSON Converter
Convert CSV rows into formatted JSON objects locally.
Open Tool arrow_forwardCSV to JSON Lines
Free CSV to JSON Lines converter that turns each row into one compact JSON object per line. Handles quoted fields and runs entirely locally.
Open Tool arrow_forwardCSV to SQL INSERT
Free CSV to SQL INSERT generator that turns pasted rows into escaped insert statements. Choose table name and create browser-only SQL output.
Open Tool arrow_forwardCSV to TSV Converter
Free CSV to TSV converter: turn comma-separated values into tab-separated values, computed in your browser.
Open Tool arrow_forwardCSV to XML Converter
Free CSV to XML converter that parses quoted records, validates element names, escapes XML text, and names root and row nodes in your browser.
Open Tool arrow_forwardCSV Viewer
Render pasted CSV as a sortable preview table with row and column counts. Handles quoted commas locally so exports are easier to inspect before sharing.
Open Tool arrow_forwardCTA Generator
Free cta generator that runs locally in your browser.
Open Tool arrow_forwardCube Volume Calculator
Free cube volume calculator: find the volume, surface area, and diagonal of a cube from its side, in your browser.
Open Tool arrow_forwardCubic Bezier Generator
Free cubic-bezier generator: build CSS easing curves with a live animated preview, in your browser.
Open Tool arrow_forwardCubic Equation Solver
Free cubic equation solver using the depressed-cubic method to find every real root from four coefficients, computed privately in your browser.
Open Tool arrow_forwardCubic Meters to US Gallons
Convert cubic meters to US liquid gallons and gallons to cubic meters using the exact US definition, with precise volume results in your browser.
Open Tool arrow_forwardCumulative GPA Calculator
Free cumulative GPA calculator: combine your prior GPA with a new semester into an overall GPA, in your browser.
Open Tool arrow_forwardcURL to Fetch Converter
Free cURL to Fetch converter that safely tokenizes shell quotes and maps methods, headers, request bodies, URLs, and Basic auth in your browser.
Open Tool arrow_forwardcURL to Python Requests
Free cURL to Python Requests converter that safely tokenizes shell syntax and maps methods, headers, bodies, Basic auth, and URLs in your browser.
Open Tool arrow_forwardCursive Text Generator
Free cursive text generator: turn plain text into flowing Unicode script letters you can paste anywhere, in your browser.
Open Tool arrow_forwardCurtain Panel Fullness Calculator
Calculate curtain fabric width from window width, fullness ratio, and panel count. It runs entirely in your browser — no uploads, accounts, or tracking.
Open Tool arrow_forwardCustomer Acquisition Cost Calculator
Free customer acquisition cost calculator that divides sales and marketing spend by new customers and shows CAC targets. Runs locally in your browser for...
Open Tool arrow_forwardCustomer Lifetime Value Calculator
Free customer lifetime value calculator that runs locally in your browser.
Open Tool arrow_forwardCustomer Persona Builder
Build a simple customer persona with goals, pains, triggers, objections, and message angles.
Open Tool arrow_forwardCustomer Retention Count Calculator
Calculate retained and lost customers from a starting count and a loss rate. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardCycling Power Energy Calculator
Calculate work done in kilojoules from average power and duration. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardCylinder Volume Calculator
Free cylinder volume calculator: find the volume and surface area of a cylinder from radius and height, in your browser.
Open Tool arrow_forwardData Size Converter
Free data size converter that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardData Transfer Rate Converter
Free data transfer rate converter that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardData URI Generator
Free data URI generator for text snippets. Choose a MIME type and create base64 or URL-encoded data URIs locally.
Open Tool arrow_forwardData URL to File
Free data URL to file converter that decodes base64 data URIs, previews metadata, and downloads the file directly from your browser safely now.
Open Tool arrow_forwardDate Add / Subtract Calculator
Free date calculator: add or subtract days, weeks, months, or years from any date, computed locally in your browser.
Open Tool arrow_forwardDate Difference Calculator
Free date difference calculator that calculates dates and times locally in your browser with specific examples, limits, and copy-ready output.
Open Tool arrow_forwardDate Extractor
Free date extractor finds ISO and month-first numeric dates in prose and lists them in source order. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardDate Format Converter
Free date format converter that calculates dates and times locally in your browser with specific examples, limits, and copy-ready output. No account required.
Open Tool arrow_forwardDay of the Week Calculator
Free day of the week calculator: find what weekday any date falls on, plus its day of the year, computed locally in your browser.
Open Tool arrow_forwardDay of the Year Calculator
Free day of the year calculator: find the ordinal day number, days remaining, and ISO week for any date, computed in your browser.
Open Tool arrow_forwardDay of Week Finder
Free day of week finder that calculates dates and times locally in your browser with specific examples, limits, and copy-ready output. No account required.
Open Tool arrow_forwardDays in Month Calculator
Free days in month calculator: find how many days are in any month and year, accounting for leap years, computed in your browser.
Open Tool arrow_forwardDays Since Date Calculator
Free days since a date calculator: count the days, weeks, and months from a past date to today, in your browser.
Open Tool arrow_forwardDays Until Date Calculator
Free days until a date calculator: count the whole days from today to any future or past date, computed locally in your browser.
Open Tool arrow_forwardDays Until Since
Free days until since that calculates dates and times locally in your browser with specific examples, limits, and copy-ready output. No account required.
Open Tool arrow_forwardDebt Avalanche Planner
Free debt avalanche planner that orders debts by highest APR first to prioritize interest savings. Runs locally in your browser for private planning.
Open Tool arrow_forwardDebt Snowball Planner
Free debt snowball planner that orders debts by balance and estimates payoff order with an extra payment budget. Runs locally in your browser for private...
Open Tool arrow_forwardDebt-to-Income Calculator
Free debt-to-income calculator: divide your monthly debt payments by gross income to get the DTI ratio lenders use, in your browser.
Open Tool arrow_forwardDecibel Distance Calculator
Calculate free-field sound level change between two distances with inverse-square spreading and private instant math directly in your browser.
Open Tool arrow_forwardDecibel Ratio Calculator
Free decibel calculator: convert between a ratio and decibels for power or amplitude, computed locally in your browser.
Open Tool arrow_forwardDecimal Hours Converter
Free decimal hours converter: switch between hours-and-minutes and decimal hours for timesheets, in your browser.
Open Tool arrow_forwardDecimal to Fraction Converter
Free decimal to fraction converter: turn any decimal into its simplest fraction and mixed number, in your browser.
Open Tool arrow_forwardDeck Board Calculator
Estimate deck boards from deck width, board width, gap, length, and waste percent. It runs entirely in your browser — no uploads, accounts, or tracking.
Open Tool arrow_forwardDeck Card Draw Odds Calculator
Calculate the single-draw chance of a matching card from deck size and matches. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardDegrees & Radians Converter
Free degrees to radians converter: switch between degrees and radians both ways, with multiples of pi, in your browser.
Open Tool arrow_forwardDelay Time Note Calculator
Calculate delay time from the quarter-note length and a note subdivision. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardDemo Show Rate Calculator
Estimate attended and no-show demos from the number booked and a show rate. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardDensity Calculator
Free density calculator: find density, mass, or volume from the other two with ρ = m/V, computed in your browser.
Open Tool arrow_forwardDeposit Balance Calculator
Calculate the deposit due and remaining balance from a total and a deposit rate. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardDeposit Milestone Splitter
Free deposit and milestone splitter that converts a project total into deposit, midpoint, delivery, and final payment amounts. Runs locally in your browser...
Open Tool arrow_forwardDerangement Calculator
Free derangement calculator that counts permutations with no fixed positions using an exact recurrence for n from zero through 18 in your browser.
Open Tool arrow_forwardDew Point Calculator
Free dew point calculator: find the dew point from temperature and relative humidity with the Magnus formula, in your browser.
Open Tool arrow_forwardDice Probability Calculator
Free dice probability calculator: find the odds of rolling a target sum with any number of dice, in your browser.
Open Tool arrow_forwardDice Roller
Free online dice roller: roll any number of dice with any number of sides plus a modifier, with fair results generated in your browser.
Open Tool arrow_forwardDiff Two Files Line
Free line diff tool for comparing two pasted files. See added, removed, and changed lines locally in your browser.
Open Tool arrow_forwardDifference of Means CI
Free difference of means confidence interval calculator using two means, standard deviations, sample sizes, and z level privately in your browser.
Open Tool arrow_forwardDifference of Proportions CI
Free difference of proportions confidence interval calculator from two success counts and sample sizes with selected confidence in your browser.
Open Tool arrow_forwardDigital Root Calculator
Free digital root calculator with labeled inputs and an immediate result. It reduces an integer through repeated digit sums privately in your browser.
Open Tool arrow_forwardDilution Calculator (C1V1=C2V2)
Free dilution calculator: solve C1V1 = C2V2 for the missing value when diluting a solution, in your browser.
Open Tool arrow_forwardDiscount + Tax Calculator
Free discount and tax calculator that applies discount first, then tax, to show final checkout price and savings. Runs locally in your browser for private...
Open Tool arrow_forwardDiscount Calculator
Free discount calculator that shows sale price, savings, and effective discount from original price and percent off. Runs locally in your browser for...
Open Tool arrow_forwardDiscovery Call Question Builder
Generate discovery call questions for service, consulting, website, and marketing projects.
Open Tool arrow_forwardDiscriminant Calculator
Free discriminant calculator with labeled inputs and an immediate result. It classifies quadratic roots from coefficients privately in your browser.
Open Tool arrow_forwardDistance Between Two Points
Free distance calculator for two points on a plane: enter coordinates to get the straight-line distance and the horizontal and vertical gaps in your browser.
Open Tool arrow_forwardDividend Reinvestment Calculator
Free DRIP calculator: project an investment’s growth when dividends are reinvested over time, in your browser.
Open Tool arrow_forwardDividend Yield Calculator
Free dividend yield calculator: find a stock’s yield from its annual dividend and share price, in your browser.
Open Tool arrow_forwardDivisors Calculator
Free divisors calculator that lists every positive factor of an integer and reports divisor count, sum, and proper divisors in your browser.
Open Tool arrow_forwardDJB2 Hash Generator
Calculate the classic 32-bit DJB2 hash for UTF-8 bytes using hash times 33 plus byte, with deterministic local output in your browser safely now.
Open Tool arrow_forwardDND Character Stat Roller
Free dnd character stat roller. It rolls six ability scores using four dice and dropping the lowest and keeps entered data private in your browser.
Open Tool arrow_forwardDNS Record Explainer
Free DNS record explainer that tokenizes zone-file syntax and labels owner, TTL, class, type, priority, target, and type fields in your browser.
Open Tool arrow_forwardDNS Zone Record Builder
Free DNS zone record builder that validates owner, TTL, class, record type, address, priority, and quoted TXT values with clear syntax in your browser.
Open Tool arrow_forwardDockerfile Generator
Free Dockerfile generator that assembles a base image, work directory, dependency install, build, port, and JSON CMD with explicit steps in your browser.
Open Tool arrow_forwardDollar Cost Averaging Calculator
Calculate shares accumulated, average cost, and ending value from recurring buys and ending price. It runs locally in your browser with no uploads.
Open Tool arrow_forwardDomain Name Brainstormer
Free domain name brainstormer that combines keywords, prefixes, suffixes, and TLD ideas for practical naming sessions. Runs locally in your browser for...
Open Tool arrow_forwardDoppler Effect Calculator
Calculate observed frequency for moving source and observer speeds with a signed classical Doppler model, evaluated privately in your browser.
Open Tool arrow_forwardDot Product Calculator
Free dot product calculator that multiplies matching vector components, adds the products, and checks equal dimensions privately in your browser.
Open Tool arrow_forwardDouble Discount Calculator
Free double discount calculator: apply two stacked discounts and see the true final price, in your browser.
Open Tool arrow_forwardDown Payment Calculator
Free down payment calculator: find the deposit and loan amount from a price and percentage, in your browser.
Open Tool arrow_forwardDownload Time Calculator
Free download time calculator: estimate how long a file takes to transfer at a given connection speed, in your browser.
Open Tool arrow_forwardDPI PPI Calculator
Free dpi ppi calculator that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardDrip Irrigation Flow Calculator
Calculate total drip-system flow from the emitter count and flow each. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardDrywall Sheet Calculator
Estimate drywall sheet count from wall area, sheet size, and waste percentage with local math. It runs entirely in your browser, with no uploads or accounts.
Open Tool arrow_forwardDue Date Calculator
Free pregnancy due date calculator using Naegele’s rule from your last period, with current week and trimester, computed in your browser.
Open Tool arrow_forwardDuotone Palette Builder
Free duotone palette builder that pairs shadow and highlight colors into a preview gradient and CSS variables.
Open Tool arrow_forwardDuplicate Contact Finder
Find likely duplicate contacts from pasted names, emails, or company rows.
Open Tool arrow_forwardDuplicate Line Remover
Remove duplicate lines while preserving the first occurrence.
Open Tool arrow_forwardDuplicate Word Finder
Free duplicate word finder locates accidental adjacent repeats and reports character positions. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardDuration Formatter
Free duration formatter that calculates dates and times locally in your browser with specific examples, limits, and copy-ready output. No account required.
Open Tool arrow_forwardEAN & UPC Check Digit
Free EAN-13 and UPC check digit calculator: enter the digits to compute or verify the barcode checksum, computed locally in your browser.
Open Tool arrow_forwardEarly Payment Discount Calculator
Calculate an early-payment discount and the reduced amount due. Everything is computed locally in your browser, with no uploads, no tracking, and no sign-ups.
Open Tool arrow_forwardEarnings Per Share Calculator
Free EPS calculator: find earnings per share from net income and shares outstanding, computed locally in your browser.
Open Tool arrow_forwardEaster Date Calculator
Free Easter date calculator: find the date of Easter Sunday for any year using the computus, in your browser.
Open Tool arrow_forwardEditorConfig Generator
Free EditorConfig generator that builds global charset and line rules plus per-pattern indentation sections with clear syntax locally in your browser.
Open Tool arrow_forwardEffective Annual Rate Calculator
Free effective annual rate calculator: convert a nominal APR with compounding into the true annual rate, in your browser.
Open Tool arrow_forwardEfficiency Calculator
Free efficiency calculator: find the efficiency of a machine or process from output and input energy, in your browser.
Open Tool arrow_forwardEgg Size Substitution Calculator
Convert recipe eggs between large egg equivalents and grams for baking adjustments. It runs entirely in your browser — no uploads, accounts, or tracking.
Open Tool arrow_forwardElastic Collision Calculator
Calculate both final velocities for a one-dimensional perfectly elastic collision from two masses and starting velocities in your browser safely now.
Open Tool arrow_forwardElevator Pitch Builder
Free elevator pitch builder that creates short 15, 30, and 60 second pitch drafts from your offer, audience, and proof. Runs locally in your browser for...
Open Tool arrow_forwardEllipse Area Calculator
Free ellipse area calculator: find the area and approximate circumference from the two radii, in your browser.
Open Tool arrow_forwardEmail Campaign ROI Calculator
Free email campaign ROI calculator that compares send cost, clicks, conversions, revenue, profit, and return on investment. Runs locally in your browser for...
Open Tool arrow_forwardEmail List Cleaner
Clean pasted email lists by trimming spaces, lowercasing addresses, and removing duplicates.
Open Tool arrow_forwardEmail Reply Count Calculator
Estimate the number of replies from emails sent and a reply rate. Everything is computed locally in your browser, with no uploads, no tracking, and no sign-ups.
Open Tool arrow_forwardEmail Subject Line Tester
Check email subject length and preview text pairing.
Open Tool arrow_forwardEmergency Fund Calculator
Free emergency fund calculator that estimates savings targets from monthly expenses and desired months of coverage. Runs locally in your browser for private...
Open Tool arrow_forwardEmoji Picker & Copy
Free searchable emoji picker: type a keyword and click to copy any emoji to your clipboard. Works in every browser, entirely client-side.
Open Tool arrow_forwardEmoji Remover
Free emoji remover that strips emoji and symbols from pasted copy while preserving words, punctuation, and line breaks. Runs locally in your browser for...
Open Tool arrow_forwardEmpathy Map Builder
Free empathy map builder that organizes what customers say, think, do, and feel into messaging and research prompts. Runs locally in your browser for...
Open Tool arrow_forwardEndianness Converter
Free endianness converter: swap the byte order of a hex value between big-endian and little-endian, in your browser.
Open Tool arrow_forwardEnergy Converter
Free energy converter that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardEngine Displacement Calculator
Free engine displacement calculator with an immediate result. It calculates total piston displacement from geometry privately in your browser.
Open Tool arrow_forwardEnglish Stopword Remover
Free English stopword remover deletes a transparent built-in list of common function words. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardEnv Parser
Free .env parser that turns key value lines into a table-style JSON view and flags malformed entries locally.
Open Tool arrow_forwardEnvironment Variable Formatter
Convert environment variable lists into .env, shell export, Docker Compose, and JSON formats with duplicate key warnings.
Open Tool arrow_forwardEOQ Calculator
Free economic order quantity calculator: find the order size that minimizes total inventory cost, in your browser.
Open Tool arrow_forwardEquity Dilution Calculator
Calculate founder ownership after issuing new shares or options from current and new share counts. It runs locally in your browser with no uploads.
Open Tool arrow_forwardEscape Velocity Calculator
Calculate ideal escape speed from a spherical body using its mass and center radius, with the gravitational result computed privately in your browser.
Open Tool arrow_forwardEthereum Gas Fee Calculator
Free ethereum gas fee calculator with labeled inputs and an immediate result. It converts gas limit and gwei price to ETH cost privately in your browser.
Open Tool arrow_forwardEuler Totient Calculator
Free euler totient calculator that counts positive integers coprime to n, with labeled assumptions and an immediate result calculated privately in your browser.
Open Tool arrow_forwardEV Charging Cost Calculator
Free ev charging cost calculator with labeled inputs and an immediate result. It estimates charging cost from energy and tariff privately in your browser.
Open Tool arrow_forwardEV Charging Time Calculator
Free ev charging time calculator with labeled inputs and an immediate result. It estimates charging hours from energy and power privately in your browser.
Open Tool arrow_forwardEV Range Cost Calculator
Calculate cost per mile and per 100 miles from charge cost and miles driven. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardEvent Schema Builder
Free event schema builder that creates Event JSON-LD with name, dates, venue, address, status, price, and event URL for SEO. Runs locally in browser.
Open Tool arrow_forwardExpansion MRR Calculator
Calculate expansion MRR and the grown MRR from upsells and upgrades. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardExpected Value Calculator
Free expected value calculator: find the mean outcome from values and their probabilities, in your browser.
Open Tool arrow_forwardExpense Ratio Drag Calculator
Estimate annual fund fee drag and long-term cost from balance, expense ratio, and years. It runs entirely in your browser — no uploads, accounts, or tracking.
Open Tool arrow_forwardExponential Distribution Calculator
Free exponential distribution calculator with labeled inputs and an immediate result. It calculates waiting-time density and CDF privately in your browser.
Open Tool arrow_forwardExtended Euclidean Calculator
Free extended Euclidean calculator that returns the gcd and Bézout coefficients for two integers, verifies the identity, and runs in your browser.
Open Tool arrow_forwardExtract Emails From Text
Free email extractor: pull all email addresses out of any text, de-duplicated and listed, computed in your browser.
Open Tool arrow_forwardExtract Numbers From Text
Free number extractor: pull all numbers out of any text, with count and sum, computed locally in your browser.
Open Tool arrow_forwardExtract URLs From Text
Free URL extractor: pull all links out of any text, de-duplicated and listed, computed locally in your browser.
Open Tool arrow_forwardFactorial Calculator
Free factorial calculator that uses big integers to compute n! exactly for large n without rounding or scientific notation, in your browser.
Open Tool arrow_forwardFahrenheit to Kelvin Converter
Convert Fahrenheit to kelvins and kelvins to Fahrenheit with the exact scale and offset formulas, with clear, precise results in your browser.
Open Tool arrow_forwardFake Data Generator
Generate clearly synthetic names, example.com emails, placeholder addresses, and reserved 555 phone numbers from a seed in your browser without uploads.
Open Tool arrow_forwardFake JSON Data Builder
Free fake JSON data builder that creates mock records from a simple field schema. Generate sample API data locally.
Open Tool arrow_forwardFancy Unicode Font Generator
Free fancy unicode font generator for cleaning, transforming, and checking pasted text. Process content locally in your browser without uploads.
Open Tool arrow_forwardFAQ Idea Generator
Generate FAQ question ideas from a topic, audience, objections, and buying stage. Useful for SEO pages, posts, and landing pages.
Open Tool arrow_forwardFAQ Schema Generator
Free faq schema generator that runs locally in your browser.
Open Tool arrow_forwardFat Macro Gram Calculator
Calculate grams of fat from fat calories. Every value is computed locally in your browser, so nothing is uploaded, stored, or shared, and no account is needed.
Open Tool arrow_forwardFathoms to Meters Converter
Convert international fathoms to meters and meters to fathoms using the exact six-foot definition, with precise results calculated in your browser.
Open Tool arrow_forwardFavicon Generator
Free favicon generator that renders uploaded artwork into common favicon PNG sizes in your browser for quick website asset prep and download.
Open Tool arrow_forwardFeature to Benefit Converter
Turn product or service features into customer-focused benefit statements using local templates and editable output.
Open Tool arrow_forwardFeet to Inches Converter
Convert feet to inches and inches to feet instantly, with exact whole-number scaling, reverse conversion, and a practical table in your browser.
Open Tool arrow_forwardFence Picket Calculator
Estimate fence pickets from run length, picket width, gap, gates, and waste with browser-only math. It runs locally in your browser with no uploads.
Open Tool arrow_forwardFence Rail Board Calculator
Calculate fence rails and bundles from sections, rails per section, bundle size, and waste. It runs entirely in your browser, with no uploads or accounts.
Open Tool arrow_forwardFertilizer NPK Calculator
Calculate fertilizer pounds needed from target nitrogen, product N percent, and lawn area. It runs entirely in your browser — no uploads, accounts, or tracking.
Open Tool arrow_forwardFFMI Calculator
Free FFMI calculator: work out your fat-free mass index and normalized value from weight, height, and body fat, in your browser.
Open Tool arrow_forwardFibonacci Sequence Generator
Free Fibonacci sequence generator using big integers to list exact terms and the golden-ratio approach, computed locally in your browser.
Open Tool arrow_forwardFinal Grade Calculator
Free final grade calculator: find the score you need on the final exam to reach your target grade, in your browser.
Open Tool arrow_forwardFinal Price After Tax Calculator
Free after-tax price calculator: add sales tax to a price and see the total, computed locally in your browser.
Open Tool arrow_forwardFind and Replace
Free find and replace tool: swap text with options for case-insensitive and regular-expression matching, in your browser.
Open Tool arrow_forwardFive Number Summary Calculator
Free five number summary calculator: find the minimum, quartiles, median, and maximum of a data set, in your browser.
Open Tool arrow_forwardFixed-Width to CSV
Free fixed-width to CSV converter that slices pasted text by column widths or ranges. Turn legacy exports into clean comma-separated data locally.
Open Tool arrow_forwardFlashcard Review Rate Calculator
Calculate cards per minute and seconds per card from cards and minutes. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardFlatten JSON
Free flatten JSON tool: turn nested JSON objects and arrays into flat dot-notation keys, computed locally in your browser.
Open Tool arrow_forwardFletcher-16 Checksum Calculator
Calculate Fletcher-16 from UTF-8 bytes with two modulo-255 rolling sums, and inspect the four-digit non-security checksum in your browser safely now.
Open Tool arrow_forwardFletcher-32 Checksum Calculator
Calculate Fletcher-32 over big-endian UTF-8 word pairs with zero padding for an odd final byte, entirely and transparently in your browser safely now.
Open Tool arrow_forwardFlexbox Playground
Generate flexbox CSS for direction, alignment, gap, and wrapping.
Open Tool arrow_forwardFlooring Calculator
Free flooring calculator: enter room area and the coverage per box to get how many boxes of flooring you need with waste, in your browser.
Open Tool arrow_forwardFlour Grams to Cups Converter
Convert flour grams to US cups and cups to grams using a 120-gram baking convention, with recipe-ready decimal results calculated in your browser.
Open Tool arrow_forwardFlow Rate Converter
Free flow rate converter: convert between litres per minute, cubic metres per hour, GPM, and CFM, in your browser.
Open Tool arrow_forwardFluid Typography Calculator
Free fluid typography calculator: generate a responsive CSS clamp() for font size across viewports, in your browser.
Open Tool arrow_forwardFNV-1a 32-bit Hash Generator
Calculate a lowercase FNV-1a 32-bit hash from UTF-8 text using the standard offset basis and prime, with local output in your browser safely now.
Open Tool arrow_forwardFNV-1a 64-bit Hash Generator
Calculate a 16-digit FNV-1a 64-bit hash from UTF-8 text using exact BigInt modular arithmetic, with private results in your browser safely now.
Open Tool arrow_forwardFollow-Up Email Sequence Planner
Free follow-up email sequence planner that maps timing, purpose, subject ideas, and message angles for polite outreach. Runs locally in your browser for...
Open Tool arrow_forwardForce Calculator (F = ma)
Free force calculator using Newton’s second law: solve force, mass, or acceleration from the other two, in your browser.
Open Tool arrow_forwardForce Converter
Free force converter: convert between newtons, kilonewtons, kilogram-force, pound-force, and dyne, in your browser.
Open Tool arrow_forwardFour Percent Rule Withdrawal
Calculate first-year withdrawal and monthly income from a portfolio using a manual withdrawal rate. It runs locally in your browser with no uploads.
Open Tool arrow_forwardFour-Square Cipher
Free four-square cipher encodes digraphs with two keyed and two standard five-by-five squares. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardFPS to MPH Converter
Convert feet per second to miles per hour and MPH back to FPS with six-significant-figure results, calculated privately in your browser on any device.
Open Tool arrow_forwardFraction Simplifier
Free fraction simplifier that reduces an integer fraction to lowest terms. Review labeled assumptions and a worked result calculated privately in your browser.
Open Tool arrow_forwardFraction Simplifier
Free fraction simplifier that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardFraction to Decimal
Free fraction to decimal that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardFractionated Morse Cipher
Free fractionated Morse cipher groups keyed Morse streams into three-symbol substitutions. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardFrame Rate Converter
Free frame rate converter that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardFree Fall Calculator
Free free fall calculator with labeled inputs and an immediate result. It estimates ideal fall speed and distance from time privately in your browser.
Open Tool arrow_forwardFreelance Day Rate Calculator
Free freelance day rate calculator that runs locally in your browser.
Open Tool arrow_forwardFreelance Hourly Rate Calculator
Free freelance rate calculator: find the hourly rate you need from income goal, billable hours, and expenses, in your browser.
Open Tool arrow_forwardFreelance Take-Home Estimator
Free freelance take-home estimator that subtracts taxes, expenses, and savings buffers from projected gross income. Runs locally in your browser for private...
Open Tool arrow_forwardFrequency Converter
Free frequency converter: convert between hertz, kilohertz, megahertz, and gigahertz, in your browser.
Open Tool arrow_forwardFrequency Table Builder
Free frequency table builder that counts repeated values and percentages from pasted rows. Sort results and copy a CSV summary locally fast.
Open Tool arrow_forwardFuel Cost Calculator
Free fuel cost calculator: estimate the fuel cost of a trip from distance, fuel economy, and price, in your browser.
Open Tool arrow_forwardFuel Economy Converter
Free fuel economy converter that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardFuel Savings Comparison
Compare annual fuel cost between two vehicle efficiencies from miles, fuel price, and MPG. It runs entirely in your browser — no uploads, accounts, or tracking.
Open Tool arrow_forwardFullwidth Text Converter
Free fullwidth text converter: turn normal text into wide ａｅｓｔｈｅｔｉｃ fullwidth characters that paste anywhere, in your browser.
Open Tool arrow_forwardFunnel Drop-off Visualizer
Free funnel drop-off visualizer that calculates step-by-step conversion, loss, and retained users from stage counts. Runs locally in your browser for...
Open Tool arrow_forwardFurlongs to Meters Converter
Convert international furlongs to meters and meters to furlongs using the exact 201.168-meter definition, with precise results in your browser.
Open Tool arrow_forwardFuture Value Calculator
Free future value calculator: project what a sum today grows to at a given rate over time, computed locally in your browser.
Open Tool arrow_forwardGarage Epoxy Kit Calculator
Calculate epoxy kits from floor area, coats, kit coverage, and waste. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardGas Mileage Calculator
Free gas mileage calculator: find your fuel economy in MPG, km/L, and L/100km from miles and fuel used, in your browser.
Open Tool arrow_forwardGCD & LCM Calculator
Free GCD and LCM calculator: paste a list of whole numbers to get their greatest common divisor and least common multiple in your browser.
Open Tool arrow_forwardGear RPM Change Calculator
Calculate new engine RPM from old RPM and a new and old gear ratio. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardGenerator Sizing Calculator
Estimate generator wattage from running watts, largest starting surge, and reserve margin. It runs entirely in your browser — no uploads, accounts, or tracking.
Open Tool arrow_forwardGeometric Distribution Calculator
Free geometric distribution calculator with an immediate result. It calculates first-success probability and cumulative chance privately in your browser.
Open Tool arrow_forwardGeometric Mean Calculator
Free geometric mean calculator: find the geometric mean of a set of positive numbers, in your browser.
Open Tool arrow_forwardGeometric Sequence Calculator
Free geometric sequence calculator: find the nth term and sum from the first term and common ratio, computed in your browser.
Open Tool arrow_forwardGigabytes to Gibibytes Converter
Convert decimal gigabytes to binary gibibytes and gibibytes to gigabytes using exact byte definitions, with precise results in your browser.
Open Tool arrow_forwardGitignore Generator
Free .gitignore generator with embedded templates for common stacks. Pick technologies and build ignore rules locally.
Open Tool arrow_forwardGlassmorphism Generator
Free glassmorphism CSS generator: create frosted-glass cards with backdrop blur and transparency, in your browser.
Open Tool arrow_forwardGlob Pattern Tester
Free glob pattern tester for matching file paths with star and double-star patterns. Test path lists locally.
Open Tool arrow_forwardGlucose Unit Converter
Free glucose unit converter that converts glucose between mg/dL and mmol/L. Review labeled assumptions and a worked result calculated privately in your browser.
Open Tool arrow_forwardGolden Ratio Calculator
Free golden ratio calculator: enter one value to get the golden-ratio partner and the two segments of a golden division, in your browser.
Open Tool arrow_forwardGoogle Ads Character Counter
Free Google Ads character counter for responsive search ad headlines, descriptions, paths, pinning notes, and limit warnings. Runs locally in browser.
Open Tool arrow_forwardGoogle Business Profile Description Writer
Draft a Google Business Profile description from your business type, location, services, audience, and differentiators. Browser-only.
Open Tool arrow_forwardGoogle Business Profile Post Generator
Draft Google Business Profile posts for offers, updates, events, and service highlights.
Open Tool arrow_forwardGPA Calculator
Free GPA calculator: find your grade point average from course grades and credits on the 4.0 scale, in your browser.
Open Tool arrow_forwardGPA Quality Points Calculator
Calculate quality points from grade points and credit hours. Everything is computed locally in your browser, with no uploads, no tracking, and no sign-ups.
Open Tool arrow_forwardGPS Coordinate Converter
Free gps coordinate converter that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardGradient Angle Visualizer
Free gradient angle visualizer that rotates a two-color linear gradient and returns the exact CSS background value.
Open Tool arrow_forwardGradient Image Generator
Free gradient image generator: create a linear gradient image between two colours, downloadable as PNG, in your browser.
Open Tool arrow_forwardGradient Palette Extractor
Free gradient palette extractor that samples evenly spaced colors from two endpoints and returns CSS-ready swatches.
Open Tool arrow_forwardGradient Wallpaper Maker
Free gradient wallpaper maker that renders custom color stops to a canvas at common screen sizes and downloads a PNG background locally online.
Open Tool arrow_forwardGrams to Moles Calculator
Free grams to moles calculator: convert mass to moles using molar mass, computed in your browser.
Open Tool arrow_forwardGrams to Ounces Converter
Convert grams to ounces and ounces to grams using the international avoirdupois ounce, with six-significant-figure results privately in your browser.
Open Tool arrow_forwardGravel Calculator
Free gravel calculator: estimate how much gravel you need by area and depth, in cubic yards and tons, in your browser.
Open Tool arrow_forwardGravitational Force Calculator
Free gravitational force calculator using Newton’s law of gravitation between two masses, in your browser.
Open Tool arrow_forwardGray Code Converter
Free Gray code converter: turn binary into reflected Gray code and back, with the decimal value, computed locally in your browser.
Open Tool arrow_forwardGrid Pattern Generator
Free grid pattern generator: create a grid or graph-paper image with custom spacing, downloadable as PNG, in your browser.
Open Tool arrow_forwardGronsfeld Cipher
Free Gronsfeld cipher shifts letters with a repeating numeric key and reverses the shifts. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardGross Profit Calculator
Free gross profit calculator: find gross profit and gross margin from revenue and cost of goods, in your browser.
Open Tool arrow_forwardGross Revenue Retention Calculator
Calculate retained MRR, churned MRR, and the GRR percentage from churn. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardGross to Net Estimator
Free gross to net estimator that subtracts manual tax, benefit, and deduction rates from gross pay. Runs locally in your browser for private planning.
Open Tool arrow_forwardGross to Net Hours Calculator
Free net hours calculator: subtract unpaid break time from gross hours to get paid hours, in your browser.
Open Tool arrow_forwardGrouped Data Mean Calculator
Free grouped data mean calculator using class midpoints and frequencies to return the weighted total, sample count, and mean in your browser.
Open Tool arrow_forwardHabit Streak Completion Calculator
Calculate days completed and missed from planned days and a completion rate. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardHalf Birthday Calculator
Free half birthday calculator: find the date exactly six months from your birthday, computed in your browser.
Open Tool arrow_forwardHalf-Life Calculator
Free half-life calculator: find how much of a substance remains after a time from its half-life, in your browser.
Open Tool arrow_forwardHalfway Date Calculator
Calculate the midpoint day number and span from a start and end day number. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardHamming Distance Calculator
Free Hamming distance calculator: count the differing positions between two equal-length strings, computed in your browser.
Open Tool arrow_forwardHands to Centimeters Converter
Convert horse-height hands to centimeters and centimeters to hands using the exact four-inch definition, with precise results in your browser.
Open Tool arrow_forwardHappy Number Checker
Free happy number checker that repeats squared-digit sums, displays the path, and detects either one or a repeating cycle entirely in your browser.
Open Tool arrow_forwardHAR to cURL Converter
Free HAR to cURL converter that parses request entries and emits method, URL, headers, and body data with safe shell quoting in your browser.
Open Tool arrow_forwardHarmonic Mean Calculator
Free harmonic mean calculator: find the harmonic mean of a set of numbers, computed locally in your browser.
Open Tool arrow_forwardHarvard Citation Generator
Free Harvard citation generator formats initials, year, title, publisher, and URL fields. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardHash Generator
Free SHA hash generator for SHA-256, SHA-384, and SHA-512. Hash pasted text locally with the browser SubtleCrypto API.
Open Tool arrow_forwardHash Type Identifier
Free hash identifier: paste a hash and get the likely algorithms based on its length and format — MD5, SHA family, bcrypt, and more — in your browser.
Open Tool arrow_forwardHashtag Cleaner
Free hashtag cleaner that runs locally in your browser.
Open Tool arrow_forwardHashtag Extractor
Free hashtag extractor finds hash-prefixed Unicode words and returns one preserved tag per line. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardHashtag Set Builder
Free hashtag set builder that groups branded, niche, audience, and topic hashtags into reusable social caption sets. Runs locally in your browser for...
Open Tool arrow_forwardHaversine Distance Calculator
Free haversine distance calculator: find the great-circle distance between two latitude and longitude points, in your browser.
Open Tool arrow_forwardHeading Structure Checker
Paste HTML and inspect the H1-H6 outline, skipped levels, and duplicate H1s.
Open Tool arrow_forwardHeadline Analyzer Lite
Free headline analyzer lite that runs locally in your browser.
Open Tool arrow_forwardHeart Rate Zone Calculator
Free heart-rate zone calculator using the Tanaka max-HR formula and optional Karvonen method, computing your five training zones in the browser.
Open Tool arrow_forwardHeat Conduction Calculator
Calculate steady one-dimensional heat conduction rate through a flat layer from conductivity, area, thickness, and temperature gap in your browser.
Open Tool arrow_forwardHeat Conduction Rate Calculator
Free heat conduction rate calculator with an immediate result. It estimates steady one-dimensional conductive heat flow privately in your browser.
Open Tool arrow_forwardHeat Index Calculator
Free heat index calculator: find the feels-like temperature from heat and humidity using the NWS formula, in your browser.
Open Tool arrow_forwardHELOC Interest Only Payment
Calculate a HELOC interest-only monthly payment from balance and variable APR entered manually. It runs entirely in your browser, with no uploads or accounts.
Open Tool arrow_forwardHex & Text Converter
Free hex to text converter: turn text into hexadecimal bytes and decode hex back to text, computed in your browser.
Open Tool arrow_forwardHex Dump Viewer
Free hex dump viewer: paste text to see a classic offset, hex, and ASCII dump like hexdump or xxd, computed locally in your browser.
Open Tool arrow_forwardHex Opacity Calculator
Free hex opacity tool: append an alpha value to a hex color to get the 8-digit RGBA hex, and see the rgba() equivalent, in your browser.
Open Tool arrow_forwardHex RGB HSL Converter
Free color code converter for hex, RGB, and HSL values. Translate common CSS color formats locally in your browser.
Open Tool arrow_forwardHex Shorthand Expander
Free hex shorthand expander that converts three-digit CSS colors into full six-digit hex and validates pasted values.
Open Tool arrow_forwardHex Text Converter
Free hex to text and text to hex converter with spacing options. Convert Unicode-safe snippets locally in your browser.
Open Tool arrow_forwardHEX to CMYK Converter
Convert three- or six-digit HEX colors to calculated CMYK percentages, preview the source color, and copy values in your browser without uploads or profiles.
Open Tool arrow_forwardHex to HSL Converter
Free hex to HSL converter: turn a hex color into HSL and RGB values, computed locally in your browser.
Open Tool arrow_forwardHex to RGBA Converter
Free hex to RGBA converter: turn a hex color and opacity into a CSS rgba() value, computed in your browser.
Open Tool arrow_forwardHexagon Area Calculator
Free regular hexagon area calculator: find the area and perimeter from the side length, in your browser.
Open Tool arrow_forwardHill Cipher 2x2
Free Hill cipher 2x2 multiplies letter pairs by an invertible matrix modulo twenty-six. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardHMAC Generator
Free HMAC generator for keyed SHA signatures. Enter a message and secret key, then calculate the digest locally in your browser.
Open Tool arrow_forwardHomophonic Substitution Cipher
Free homophonic substitution cipher alternates two numeric symbols for each plaintext letter. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardHooke’s Law Calculator
Free Hooke’s law calculator: find spring force from the spring constant and displacement, in your browser.
Open Tool arrow_forwardHorsepower to Kilowatts Converter
Convert mechanical horsepower to kilowatts and kilowatts to horsepower using the standard power factor, with precise results in your browser.
Open Tool arrow_forwardHourly Rate Calculator
Free hourly rate calculator that runs locally in your browser.
Open Tool arrow_forwardHourly to Salary Calculator
Convert an hourly rate into weekly, monthly, and annual pay from hours and weeks entered. It runs entirely in your browser — no uploads, accounts, or tracking.
Open Tool arrow_forwardHourly to Salary Converter
Free hourly to salary converter that compares hourly wage, annual salary, weekly pay, and reverse salary rate. Runs locally in your browser for private...
Open Tool arrow_forwardHowTo Schema Builder
Free HowTo schema builder that turns a title, tool list, supply list, and step-by-step instructions into copy-ready JSON-LD. Runs locally in browser.
Open Tool arrow_forwardhreflang Cluster Validator
Free hreflang cluster validator that checks language alternates for missing x-default, duplicate codes, malformed URLs, and common setup issues.
Open Tool arrow_forwardHreflang Tag Generator
Generate hreflang alternate tags from a canonical URL and locale list.
Open Tool arrow_forwardHSL Interactive Wheel
Free HSL color wheel controls for hue, saturation, and lightness with live hex, rgb, and hsl output for CSS palette work.
Open Tool arrow_forwardHSV ↔ RGB Converter
Free HSV and RGB converter: switch a color between hue-saturation-value and RGB or hex, computed locally in your browser.
Open Tool arrow_forwardHtaccess Redirect Generator
Free htaccess redirect generator that parses source and destination pairs into Apache Redirect or RewriteRule lines with clear errors in your browser.
Open Tool arrow_forwardHTML Beautifier
Free HTML beautifier that adds line breaks and indentation to compact markup. Format simple snippets locally.
Open Tool arrow_forwardHTML Entity Encoder
Free HTML entity encoder and decoder: convert special characters to entities and back, computed locally in your browser.
Open Tool arrow_forwardHTML Entity Encoder & Decoder
Escape HTML characters or decode entities locally in your browser.
Open Tool arrow_forwardHTML Minifier Lite
Remove comments and extra whitespace from HTML snippets locally.
Open Tool arrow_forwardHTML Table Generator
Free html table generator that runs locally in your browser.
Open Tool arrow_forwardHTML Tag Stripper
Free html tag stripper that runs locally in your browser.
Open Tool arrow_forwardHTML to JSX Converter
Free HTML to JSX converter that safely parses markup and securely rewrites attributes, inline styles, comments, void tags, and text in your browser.
Open Tool arrow_forwardHTML to Markdown Converter
Free HTML to Markdown converter that parses a node tree and handles headings, links, lists, emphasis, code, images, quotes, and rules in your browser.
Open Tool arrow_forwardHTTP Header Parser
Paste HTTP response headers to parse status, cache rules, content type, redirects, and common security headers locally.
Open Tool arrow_forwardHTTP Header Reference
Free HTTP header reference with searchable meanings for common request, response, cache, and security headers.
Open Tool arrow_forwardHTTP Status Code Explainer
Look up common HTTP status codes and what they usually mean.
Open Tool arrow_forwardHWB Color Converter
Use this free HWB color converter in your browser to convert sRGB hex colors to CSS HWB and back. Output stays private and local. No upload is needed.
Open Tool arrow_forwardHydration During Run Calculator
Calculate fluid needed from hours running and an hourly fluid rate. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardHypergeometric Distribution
Free hypergeometric distribution calculator for exactly k successes when sampling without replacement from a finite population in your browser.
Open Tool arrow_forwardIBAN Validator
Free IBAN validator: check an international bank account number against the ISO mod-97 checksum and see its country and length, locally in your browser.
Open Tool arrow_forwardIcon Sprite Sheet Builder
Free icon sprite sheet builder that combines pasted SVG snippets into one symbol sprite, keeps viewBox values, and generates copy-ready markup.
Open Tool arrow_forwardIdeal Gas Law Calculator
Free ideal gas law calculator: enter any three of pressure, volume, moles, and temperature to solve for the fourth using PV = nRT, in your browser.
Open Tool arrow_forwardIdeal Weight Calculator
Free ideal body weight calculator using the Devine and Robinson formulas from your height and sex, computed locally in your browser.
Open Tool arrow_forwardIdeal Weight Range Calculator
Free ideal weight range calculator comparing Devine and Robinson formula estimates from height and sex, with pounds and kilograms shown locally.
Open Tool arrow_forwardIdenticon Generator
Free identicon generator: create a GitHub-style symmetric avatar from any text, downloadable as PNG, in your browser.
Open Tool arrow_forwardIEEE Citation Generator
Free IEEE citation generator creates numbered author, title, publisher, year, and URL entries. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardIEEE-754 Float Inspector
Free IEEE-754 inspector: enter a decimal number to see its 32-bit and 64-bit floating-point sign, exponent, mantissa bits, and hex, in your browser.
Open Tool arrow_forwardImage Blur Tool
Use this free image blur tool in your browser to apply a downloadable box blur to local raster pixels. Output stays private and local. No upload is needed.
Open Tool arrow_forwardImage Border Adder
Use this free image border adder in your browser to draw a configurable solid border around a local image. Output stays private and local. No upload is needed.
Open Tool arrow_forwardImage Brightness & Contrast
Adjust image brightness and contrast on a local canvas, preview every change, and download the processed PNG without uploads in your browser.
Open Tool arrow_forwardImage Channel Swapper
Free image channel swapper. It swaps the red and blue channels of a local image and downloads a PNG and keeps entered data private in your browser.
Open Tool arrow_forwardImage Chroma Key Tool
Use this free image chroma key tool in your browser to make pixels near a chosen key color transparent using tolerance distance. Output stays private and local.
Open Tool arrow_forwardImage Collage Maker
Free image collage maker that arranges multiple uploaded images into a square grid canvas and exports the combined collage as a PNG locally.
Open Tool arrow_forwardImage Color Extractor
Free image color extractor that samples an uploaded image in your browser and returns a simple dominant-color palette.
Open Tool arrow_forwardImage Color Picker
Free image color picker for sampling exact pixel colors from an uploaded image, with click-to-sample RGB and hex output generated locally in browser.
Open Tool arrow_forwardImage Color Replacer
Use this free image color replacer in your browser to replace pixels near a chosen RGB color using tolerance distance. Output stays private and local.
Open Tool arrow_forwardImage Compressor
Free image compressor that re-encodes uploaded photos with a quality slider in your browser, estimates file size, and exports JPEG or WebP copies.
Open Tool arrow_forwardImage Cropper
Free image cropper that crops uploaded images by pixel coordinates in your browser, with live preview, exact rectangle controls, and downloadable PNG output.
Open Tool arrow_forwardImage Dimensions Viewer
Free image dimensions viewer: see an image’s width, height, aspect ratio, and file size, all in your browser.
Open Tool arrow_forwardImage Duotone Filter
Use this free image duotone filter in your browser to map local luminance between chosen shadow and highlight colors. Output stays private and local.
Open Tool arrow_forwardImage Edge Detector
Use this free image edge detector in your browser to apply a Sobel edge detector to local raster luminance. Output stays private and local. No upload is needed.
Open Tool arrow_forwardImage Emboss Filter
Use this free image emboss filter in your browser to apply a directional emboss convolution to local raster pixels. Output stays private and local.
Open Tool arrow_forwardImage Filename Cleaner
Free image filename cleaner that runs locally in your browser.
Open Tool arrow_forwardImage Flipper
Free image flipper: mirror a photo horizontally or vertically and download it, all in your browser.
Open Tool arrow_forwardImage Floyd-Steinberg Dither
Use this free image floyd-steinberg dither in your browser to apply Floyd-Steinberg error diffusion to local raster luminance. Output stays private and local.
Open Tool arrow_forwardImage Format Converter
Free image format converter that exports uploaded images as PNG, JPEG, or WebP in your browser with preview, format notes, and no server-side processing.
Open Tool arrow_forwardImage Gamma Correction
Use this free image gamma correction in your browser to apply gamma correction directly to local RGB channels. Output stays private and local.
Open Tool arrow_forwardImage Histogram
Free image histogram tool that samples uploaded image pixels and charts red, green, and blue channel distribution locally in your browser online.
Open Tool arrow_forwardImage Hue Rotation Tool
Use this free image hue rotation tool in your browser to rotate local raster hue values while preserving saturation and. Output stays private and local.
Open Tool arrow_forwardImage Levels Adjuster
Use this free image levels adjuster in your browser to remap local black point white point and midpoint gamma. Output stays private and local.
Open Tool arrow_forwardImage Metadata Viewer
Free image metadata viewer that reads file name, type, size, dimensions, and last modified time locally without uploading your image anywhere.
Open Tool arrow_forwardImage Opacity Adjuster
Use this free image opacity adjuster in your browser to multiply local image alpha values by an adjustable opacity. Output stays private and local.
Open Tool arrow_forwardImage Padding Adder
Use this free image padding adder in your browser to add transparent or colored padding around a local image. Output stays private and local.
Open Tool arrow_forwardImage Pixelate Tool
Use this free image pixelate tool in your browser to downsample and nearest-neighbor upscale local raster pixels. Output stays private and local.
Open Tool arrow_forwardImage Posterize Tool
Use this free image posterize tool in your browser to reduce local RGB channels to a selected number of tonal levels. Output stays private and local.
Open Tool arrow_forwardImage Resizer
Free image resizer for changing uploaded image dimensions in your browser, with canvas preview, download output, and no file upload required.
Open Tool arrow_forwardImage RGB Channel Splitter
Use this free image RGB channel splitter in your browser to render red green and blue channel panels from one local image. Output stays private and local.
Open Tool arrow_forwardImage Rotator
Free image rotator: rotate a photo by 90, 180, or 270 degrees and download it, all in your browser.
Open Tool arrow_forwardImage Rotator and Flipper
Free image rotator and flipper for turning uploaded images by 90 degree steps, mirroring them, previewing canvas output, and downloading PNGs.
Open Tool arrow_forwardImage Rounded Corner Tool
Use this free image rounded corner tool in your browser to mask local raster corners to an adjustable radius with transparency. Output stays private and local.
Open Tool arrow_forwardImage Ruler Measure Overlay
Free image ruler overlay for measuring pixel distance between two clicked points on an uploaded image, all locally in your browser for QA notes.
Open Tool arrow_forwardImage Saturation Adjuster
Use this free image saturation adjuster in your browser to change raster saturation with luminance-preserving pixel math. Output stays private and local.
Open Tool arrow_forwardImage Sharpen Tool
Use this free image sharpen tool in your browser to apply an adjustable convolution sharpen kernel to local pixels. Output stays private and local.
Open Tool arrow_forwardImage Size Calculator
Calculate display size, retina dimensions, and aspect-ratio height.
Open Tool arrow_forwardImage Solarize Tool
Use this free image solarize tool in your browser to invert local channel values above an adjustable threshold. Output stays private and local.
Open Tool arrow_forwardImage Threshold Tool
Use this free image threshold tool in your browser to turn raster pixels black or white at an adjustable luminance threshold. Output stays private and local.
Open Tool arrow_forwardImage Tint Overlay
Use this free image tint overlay in your browser to blend a chosen tint color into every local image pixel. Output stays private and local. No upload is needed.
Open Tool arrow_forwardImage to Base64 Converter
Free image to Base64 converter: turn an image into a Base64 data URI you can embed in code or CSS, in your browser.
Open Tool arrow_forwardImage to Grayscale Converter
Free image to grayscale converter: turn any photo black and white and download it, all in your browser.
Open Tool arrow_forwardImage Vignette Tool
Use this free image vignette tool in your browser to darken local image edges with an adjustable radial vignette. Output stays private and local.
Open Tool arrow_forwardImpermanent Loss Calculator
Calculate constant-product AMM impermanent loss from a price change ratio with local DeFi math. It runs entirely in your browser, with no uploads or accounts.
Open Tool arrow_forwardImpulse and Momentum Calculator
Calculate impulse, final momentum, and velocity change from constant force, duration, initial momentum, and mass privately in your browser safely now.
Open Tool arrow_forwardInclined Plane Calculator
Calculate normal force, kinetic friction, and acceleration for a mass on an inclined plane using angle and friction inputs in your browser safely now.
Open Tool arrow_forwardInductive and Capacitive Reactance
Free inductive and capacitive reactance with labeled inputs and an immediate result. It calculates AC reactance at a chosen frequency privately in your browser.
Open Tool arrow_forwardInelastic Collision Calculator
Calculate shared velocity and kinetic energy lost when two objects stick together in a one-dimensional collision privately in your browser safely now.
Open Tool arrow_forwardInflation Calculator
Free inflation calculator: see how prices and purchasing power change over time at a given rate, in your browser.
Open Tool arrow_forwardINI To JSON
Free INI to JSON converter for sectioned config files. Parse common key value files locally in your browser.
Open Tool arrow_forwardInitials Avatar Generator
Free initials avatar generator: create a coloured avatar with a name’s initials, downloadable as PNG, in your browser.
Open Tool arrow_forwardInitials Extractor
Free initials extractor for cleaning, transforming, and checking pasted text. Process content locally in your browser without uploads.
Open Tool arrow_forwardInitiative Average Calculator
Calculate the average initiative bonus from a total and a character count. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardInstagram Caption Counter
Free instagram caption counter. It counts Unicode characters against a 2,200-character caption limit and keeps entered data private in your browser.
Open Tool arrow_forwardInstagram Caption Formatter
Free Instagram caption formatter that cleans line breaks, groups hashtags, and creates a readable caption block to copy. Runs locally in your browser for...
Open Tool arrow_forwardInstagram Save Rate Calculator
Estimate saves and confirm the save rate from impressions and a save percentage. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardInsulation R Value Calculator
Calculate total insulation R value from layers, thickness, and R per inch using local browser math. It runs locally in your browser with no uploads.
Open Tool arrow_forwardInterest Only Loan Calculator
Calculate an interest-only payment and compare it with amortizing repayment for the same balance. It runs entirely in your browser, with no uploads or accounts.
Open Tool arrow_forwardInternal Link Anchor Planner
Free internal link anchor planner that runs locally in your browser.
Open Tool arrow_forwardInternal Link Counter
Free internal link counter that scans pasted HTML and counts internal links, external links, anchors, duplicate URLs, and nofollow usage. Runs locally.
Open Tool arrow_forwardInternal Link Opportunity Finder
Paste page snippets and target keywords to find internal link opportunities with suggested source pages and anchor text. Browser-only.
Open Tool arrow_forwardInterval Timer
Free interval timer that calculates dates and times locally in your browser with specific examples, limits, and copy-ready output. No account required.
Open Tool arrow_forwardInterview Question Generator
Generate role-specific interview questions for skills, judgment, collaboration, and process.
Open Tool arrow_forwardInventory Carrying Cost Calculator
Calculate annual and monthly inventory carrying cost from value and a carrying rate. It runs entirely in your browser — no uploads, accounts, or tracking.
Open Tool arrow_forwardInventory Turnover Calculator
Free inventory turnover calculator: find how many times stock sells through and the days on hand, in your browser.
Open Tool arrow_forwardInvert Image Colors
Free image colour inverter: create a photographic negative of any image and download it, in your browser.
Open Tool arrow_forwardInvisible Text Generator
Free invisible text generator: create blank, invisible characters to copy for empty messages and usernames, in your browser.
Open Tool arrow_forwardInvoice Email Generator
Generate polite invoice emails for new invoices, payment reminders, overdue notes, and paid confirmations.
Open Tool arrow_forwardInvoice Late Fee Calculator
Estimate late fees by amount, monthly rate, and days overdue.
Open Tool arrow_forwardInvoice Tax Add Calculator
Calculate the tax and tax-inclusive total from a subtotal and a tax rate. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardInvoice Tax Remove Calculator
Calculate the pre-tax subtotal and tax portion from a tax-inclusive total. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardInvoice Total Builder
Free invoice total builder that sums pasted line items, applies tax or discount rates, and creates a copyable total summary. Runs locally in your browser...
Open Tool arrow_forwardIP Address Extractor
Free IP address extractor validates and lists IPv4 plus compressed or full IPv6 addresses from text. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardIP Address Info
Free IPv4 address inspector: see the class, whether it is private, loopback, or reserved, plus its integer, hex, and binary forms, all in your browser.
Open Tool arrow_forwardIP Range to CIDR
Free IP range to CIDR converter that covers an inclusive IPv4 start and end with the smallest aligned exact block list using exact math in your browser.
Open Tool arrow_forwardIP to Integer Converter
Free IPv4 to integer converter: turn a dotted IP into its 32-bit number and back, computed locally in your browser.
Open Tool arrow_forwardIPv4 to IPv6 Converter
Free IPv4 to IPv6 converter: show the mapped and 6to4 IPv6 forms of any IPv4 address, computed locally in your browser.
Open Tool arrow_forwardIPv6 Compressor
Free IPv6 compressor that validates eight hextets, expands double-colon input, removes leading zeros, and compresses the longest zero run in your browser.
Open Tool arrow_forwardIPv6 Expander
Free IPv6 tool: expand a compressed address to its full eight-group form, or compress a full address to its shortest valid form, in your browser.
Open Tool arrow_forwardIPv6 Subnet Calculator
Free IPv6 subnet calculator that applies a prefix with 128-bit arithmetic and reports the compressed network, host bits, and capacity in your browser.
Open Tool arrow_forwardISBN Validator & Converter
Free ISBN tool: validate ISBN-10 and ISBN-13, and convert between them, with the check digit computed locally in your browser.
Open Tool arrow_forwardISO 8601 Formatter
Free iso 8601 formatter that calculates dates and times locally in your browser with specific examples, limits, and copy-ready output. No account required.
Open Tool arrow_forwardIsogram Checker
Free isogram checker: test whether a word has no repeated letters and see which letters repeat, computed locally in your browser.
Open Tool arrow_forwardIV Drip Rate Calculator
Free iv drip rate calculator with labeled inputs and an immediate result. It calculates a theoretical gravity drip rate privately in your browser.
Open Tool arrow_forwardJava String HashCode Calculator
Calculate Java String hashCode from UTF-16 code units with signed decimal and unsigned hexadecimal views, reproduced locally in your browser.
Open Tool arrow_forwardJob Post Clarity Checker
Review a job post for clarity, responsibilities, requirements, compensation, and application instructions.
Open Tool arrow_forwardJobPosting Schema Builder
Free JobPosting schema builder that creates JSON-LD with title, hiring organization, location, salary, dates, and apply URL. Runs locally in browser.
Open Tool arrow_forwardJoules to Calories Converter
Convert joules to thermochemical calories and calories to joules using the standard energy factor, with precise results calculated in your browser.
Open Tool arrow_forwardJS Beautifier Lite
Free lightweight JavaScript beautifier that adds basic line breaks and indentation to simple snippets locally.
Open Tool arrow_forwardJS Minifier Lite
Free lightweight JavaScript minifier for simple snippets. Remove comments and extra whitespace locally before sharing.
Open Tool arrow_forwardJSON Array Splitter
Free JSON array splitter that chunks a large JSON array into smaller arrays. Choose batch size and copy each chunk from your browser safely now.
Open Tool arrow_forwardJSON Diff
Free JSON diff tool that compares two JSON blobs by path. Find added, removed, and changed values locally.
Open Tool arrow_forwardJSON Escape Unescape
Free JSON escape and unescape tool for string values. Convert raw text to JSON strings and parse them back locally.
Open Tool arrow_forwardJSON Flattener
Free JSON flattener that converts nested objects and arrays into dot-notation keys. Inspect API data or prepare flat exports locally and privately.
Open Tool arrow_forwardJSON Formatter & Validator
Pretty-print, minify, and validate JSON instantly. Private and browser-only.
Open Tool arrow_forwardJSON Key Counter
Free JSON key counter: count keys, values, and nesting depth of a JSON document, computed in your browser.
Open Tool arrow_forwardJSON Key Renamer
Free JSON key renamer that applies bulk old-to-new key mappings across nested objects and arrays. Refactor sample data locally and privately.
Open Tool arrow_forwardJSON Merge
Free JSON merge tool that deep-merges two objects and shows the combined result. Choose whether arrays replace or concatenate locally with preview.
Open Tool arrow_forwardJSON Path Extractor
Extract values from JSON with simple dot paths and array indexes. Useful for API debugging and quick data inspection. Browser-only.
Open Tool arrow_forwardJSON Schema Generator
Free JSON schema generator that infers a practical schema from sample JSON. Detect types, arrays, required keys, and nested objects locally.
Open Tool arrow_forwardJSON Sorter
Free JSON sorter that recursively sorts object keys for stable diffs and reviews. Format sorted JSON locally in your browser.
Open Tool arrow_forwardJSON String Escaper
Free JSON string escaper: escape text into a JSON string literal or unescape one back to raw text, in your browser.
Open Tool arrow_forwardJSON to .env Converter
Free JSON to .env converter: flatten a JSON object into environment-variable lines, computed in your browser.
Open Tool arrow_forwardJSON to C Sharp Class
Free JSON to C Sharp class generator that infers nested models, System.Text.Json attributes, lists, and value types with clear output in your browser.
Open Tool arrow_forwardJSON to CSV Converter
Convert JSON arrays or objects into copyable CSV locally.
Open Tool arrow_forwardJSON To Go Struct
Free JSON to Go struct generator that infers basic field types and JSON tags from sample objects locally.
Open Tool arrow_forwardJSON to GraphQL Type
Free JSON to GraphQL type generator that safely infers nested object types, scalar fields, lists, and nullability hints from data in your browser.
Open Tool arrow_forwardJSON to INI Converter
Free JSON to INI converter that safely writes root settings, named sections, dotted nested keys, arrays, and safely quoted values in your browser.
Open Tool arrow_forwardJSON to Java Class
Free JSON to Java class generator that safely infers nested POJOs, Jackson property annotations, lists, and scalar field types in your browser.
Open Tool arrow_forwardJSON to Kotlin Data Class
Free JSON to Kotlin data class generator that infers nested serializable models, lists, scalar types, and key aliases with clear output in your browser.
Open Tool arrow_forwardJSON to Markdown List
Free JSON to Markdown list converter that renders nested objects and arrays as readable bullet lists. Document API samples locally in seconds.
Open Tool arrow_forwardJSON to Mongoose Schema
Free JSON to Mongoose schema generator that infers required nested definitions, arrays, strings, numbers, and booleans with valid syntax in your browser.
Open Tool arrow_forwardJSON to PHP Class
Free JSON to PHP class generator that infers typed readonly constructor properties and nested value objects with strict types in your browser.
Open Tool arrow_forwardJSON to Plist Converter
Free JSON to XML plist converter that safely serializes dictionaries, arrays, strings, numbers, and booleans with escaped values in your browser.
Open Tool arrow_forwardJSON to Properties Converter
Free JSON to Java properties converter that safely flattens nested objects and arrays into escaped dotted keys and scalar values in your browser.
Open Tool arrow_forwardJSON to Protobuf Message
Free JSON to Protobuf message generator that infers nested messages, repeated fields, scalar types, and stable field numbers in your browser.
Open Tool arrow_forwardJSON to Python Dataclass
Free JSON to Python tool: infer a @dataclass with typed fields from a sample JSON object, generated locally in your browser.
Open Tool arrow_forwardJSON to Python Pydantic
Free JSON to Python Pydantic generator that safely infers nested BaseModel classes, aliases, lists, and field types from data in your browser.
Open Tool arrow_forwardJSON to Python TypedDict
Free JSON to Python TypedDict generator that safely infers nested dictionary declarations, list members, and annotations locally in your browser.
Open Tool arrow_forwardJSON To Query String
Free JSON to query string converter that flattens simple objects into URL parameters. Build params locally in your browser.
Open Tool arrow_forwardJSON to Rust Serde Struct
Free json to rust serde struct. It infers a Rust struct with Serde derives from one JSON object and keeps entered data private in your browser.
Open Tool arrow_forwardJSON to SQL Insert
Free JSON to SQL INSERT converter that handles object arrays, unioned columns, quoted identifiers, escaped text, booleans, and null in your browser.
Open Tool arrow_forwardJSON to SQL Table
Free JSON to SQL tool: infer a CREATE TABLE statement with column types from a sample JSON object or array, generated locally in your browser.
Open Tool arrow_forwardJSON to Swift Codable
Free JSON to Swift Codable generator that safely infers nested structs, arrays, scalar properties, and CodingKeys aliases locally in your browser.
Open Tool arrow_forwardJSON to TOML Converter
Convert JSON objects to readable TOML tables, scalar values, and arrays, see clear parse errors, and copy the result privately in your browser.
Open Tool arrow_forwardJSON To TypeScript Interface
Free JSON to TypeScript interface generator that infers basic field types from sample JSON locally in your browser.
Open Tool arrow_forwardJSON To XML Converter
Free JSON to XML converter for simple objects and arrays. Transform sample data into readable XML locally in your browser.
Open Tool arrow_forwardJSON to YAML Converter
Free json to yaml converter that runs locally in your browser.
Open Tool arrow_forwardJSON to Yup Schema
Free JSON to Yup schema generator that infers required nested objects, arrays, scalar fields, integers, and nullable values in your browser.
Open Tool arrow_forwardJSON to Zod Schema
Free JSON to Zod schema generator that safely infers executable object, array, scalar, integer, and null validators from a sample in your browser.
Open Tool arrow_forwardJSON Unflattener
Free JSON unflattener that rebuilds nested objects from dot-notation keys. Paste flat JSON and restore structure locally in your browser with preview.
Open Tool arrow_forwardJSONL JSON Array Converter
Free JSONL and JSON array converter for line-delimited records. Convert logs and exports locally in your browser.
Open Tool arrow_forwardJSONL to JSON Array
Free JSON Lines converter: turn newline-delimited JSON objects into a single JSON array, computed locally in your browser.
Open Tool arrow_forwardJulian Day Number Calculator
Free Julian Day Number calculator: convert a calendar date to its astronomical Julian day, in your browser.
Open Tool arrow_forwardJWT Decoder
Decode JSON Web Token headers and payloads locally in your browser. Inspect claims, expiry, issuer, and audience without upload.
Open Tool arrow_forwardKelly Criterion Calculator
Free kelly criterion calculator with labeled inputs and an immediate result. It estimates the full-Kelly bankroll fraction privately in your browser.
Open Tool arrow_forwardKelvin to RGB
Free color temperature converter: turn a Kelvin value into an approximate RGB and hex color, from warm candlelight to cool daylight, in your browser.
Open Tool arrow_forwardKepler's Third Law Calculator
Calculate ideal orbital period from semi-major axis and central mass using Newtonian Kepler form, with seconds and days returned in your browser.
Open Tool arrow_forwardKeyboard Shift Cipher
Free keyboard shift cipher moves characters along QWERTY rows by a chosen number of keys. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardKeyword Cannibalization Mapper
Paste keyword, URL, position, and click rows to find queries where multiple pages may be competing. Local SEO analysis tool.
Open Tool arrow_forwardKeyword Cluster Cleaner
Clean and group pasted keyword lists into simple topic clusters.
Open Tool arrow_forwardKeyword Density Checker
Paste text to see top repeated words, counts, and percentages locally.
Open Tool arrow_forwardKeyword Permutation Generator
Free keyword permutation generator that combines seed terms, modifiers, locations, and intents into copy-ready SEO keyword lists. Runs locally.
Open Tool arrow_forwardKeyword Substitution Cipher
Free keyword substitution cipher builds a deduplicated keyed alphabet for reversible mapping. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardKilobytes to Kibibytes Converter
Convert decimal kilobytes to binary kibibytes and kibibytes to kilobytes using exact byte definitions, with precise results in your browser.
Open Tool arrow_forwardKilocalories to Kilojoules
Convert kilocalories to kilojoules and kilojoules to kilocalories using the exact 4.184 factor, with precise energy results in your browser.
Open Tool arrow_forwardKilograms to Pounds Converter
Convert kilograms to pounds and pounds to kilograms using the international avoirdupois factor, with precise results calculated in your browser.
Open Tool arrow_forwardKilograms to Stone Converter
Convert kilograms to decimal stone and stone to kilograms using the international avoirdupois definition, with precise results in your browser.
Open Tool arrow_forwardKilometers to Miles Converter
Convert kilometers to miles and miles to kilometers using the standard international factor, with a practical reference table in your browser.
Open Tool arrow_forwardKilowatt-Hours to Joules
Convert kilowatt-hours to joules and joules to kilowatt-hours using the exact energy relationship, with precise results calculated in your browser.
Open Tool arrow_forwardKinematics Calculator
Calculate final velocity and displacement from initial velocity, constant acceleration, and elapsed time with results in your browser without uploads.
Open Tool arrow_forwardKinetic Energy Calculator
Free kinetic energy calculator: find the energy of a moving object from mass and speed with KE = ½mv², in your browser.
Open Tool arrow_forwardKnots to KM/H Converter
Convert knots to kilometers per hour and back using the exact 1.852-kilometer nautical mile, with a clear, practical speed table in your browser.
Open Tool arrow_forwardKnots to MPH Converter
Convert knots to miles per hour and miles per hour to knots using the international nautical mile, with precise speed results in your browser.
Open Tool arrow_forwardKPA to PSI Converter
Convert kilopascals to PSI and PSI to kilopascals using the standard pressure factor, with precise results and a reference table in your browser.
Open Tool arrow_forwardLab Dilution Factor Calculator
Calculate final concentration and dilution factor from stock and volumes. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardLadder Angle Calculator
Free ladder angle calculator with labeled inputs and an immediate result. It checks ladder angle from rise and base distance privately in your browser.
Open Tool arrow_forwardLanding Page Lead Calculator
Estimate leads and non-converting visits from traffic and a conversion rate. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardLanding Page Section Planner
Free landing page section planner that runs locally in your browser.
Open Tool arrow_forwardLandscape Fabric Roll Calculator
Calculate landscape fabric rolls from bed area, roll coverage, and overlap. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardLate Fee Percent Calculator
Calculate a late fee and the new balance due from an invoice and a fee rate. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardLaunch Checklist Generator
Generate a practical launch checklist for websites, campaigns, tools, and product updates.
Open Tool arrow_forwardLC Resonant Frequency Calculator
Free lc resonant frequency calculator with labeled inputs and an immediate result. It finds ideal inductor-capacitor resonance privately in your browser.
Open Tool arrow_forwardLCH Color Converter
Use this free LCH color converter in your browser to convert sRGB hex colors to CIE LCH and back. Output stays private and local. No upload is needed.
Open Tool arrow_forwardLead Qualification Scorecard
Score a lead by budget, urgency, fit, authority, and problem clarity. Free private browser tool.
Open Tool arrow_forwardLead Time Demand Calculator
Calculate lead-time demand from average daily demand and lead time. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardLean Body Mass Calculator
Free lean body mass calculator using the Boer formula from your weight, height, and sex, computed locally in your browser.
Open Tool arrow_forwardLeap Year Checker
Free leap year checker that calculates dates and times locally in your browser with specific examples, limits, and copy-ready output. No account required.
Open Tool arrow_forwardLED Resistor Calculator
Free LED series resistor calculator: enter supply voltage, LED forward voltage, and current to get the resistor value and power, in your browser.
Open Tool arrow_forwardLeetspeak Converter
Free leetspeak converter: turn text into 1337 5p34k with numbers and symbols, or decode it back to plain text, in your browser.
Open Tool arrow_forwardLength Converter
Free length converter that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardLetter Grade Calculator
Free letter grade calculator: convert a percentage into a letter grade and GPA points, computed in your browser.
Open Tool arrow_forwardLetter Spacing Converter
Free letter-spacing converter: switch between pixels and em for a font size, computed locally in your browser.
Open Tool arrow_forwardLexical Diversity Calculator
Free lexical diversity calculator reports unique word types, tokens, and type-token ratio. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardLicense Picker
Free software license picker comparing MIT, Apache 2.0, GPL 3.0, and BSD 3-Clause basics with copyable summaries.
Open Tool arrow_forwardLicensing Fee Calculator
Calculate a licensing fee and the licensee share from net receipts and a rate. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardLight-Year Converter
Free light-year converter: convert between light-years, kilometres, miles, AU, and parsecs, in your browser.
Open Tool arrow_forwardLine Break Converter
Free line break converter for cleaning, transforming, and checking pasted text. Process content locally in your browser without uploads.
Open Tool arrow_forwardLine Height Calculator
Free line height calculator: convert between unitless line-height and pixels for a font size, in your browser.
Open Tool arrow_forwardLine Sorter
Alphabetize lines in a pasted list.
Open Tool arrow_forwardLinear Regression Calculator
Free linear regression calculator: fit a least-squares line to your x,y points and get slope, intercept, and R-squared, in your browser.
Open Tool arrow_forwardLinear Thermal Expansion Calculator
Free linear thermal expansion calculator with an immediate result. It estimates length change from temperature change privately in your browser.
Open Tool arrow_forwardLines to JSON Array
Free tool to convert text lines into a JSON array of strings, with trim and skip-empty options, in your browser.
Open Tool arrow_forwardLinkedIn Click Rate Calculator
Estimate clicks and confirm the click-through rate from impressions and a click percentage. It runs entirely in your browser, with no uploads or accounts.
Open Tool arrow_forwardLinkedIn Post Formatter
Free LinkedIn post formatter that turns rough notes into a hook, spaced body, takeaway, and call-to-action structure. Runs locally in your browser for...
Open Tool arrow_forwardList Intersection Difference
Free list intersection and difference tool that compares two pasted lists. Find shared, only-left, and only-right values locally with case options.
Open Tool arrow_forwardList Randomizer
Free list randomizer: shuffle any list of lines into a fair random order, computed locally in your browser.
Open Tool arrow_forwardList Shuffler
Free list shuffler for cleaning, transforming, and checking pasted text. Process content locally in your browser without uploads.
Open Tool arrow_forwardList to Comma-Separated
Free tool to convert a list of lines into a comma-separated string, with optional quotes, in your browser.
Open Tool arrow_forwardList Union Dedupe
Free list union and dedupe tool that combines multiple pasted lists into one unique set. Normalize case, trim values, and copy results locally.
Open Tool arrow_forwardLiters to Cubic Feet Converter
Convert liters to cubic feet and cubic feet to liters using the exact international-foot volume relationship, with precise results in your browser.
Open Tool arrow_forwardLiters to US Gallons Converter
Convert liters to US gallons and US gallons to liters using the exact US liquid-gallon definition, with a practical reference table in your browser.
Open Tool arrow_forwardLLMs.txt Generator
Create a starter llms.txt file for AI systems and content guidance.
Open Tool arrow_forwardLoan Comparison Calculator
Compare two fixed loans by payment, total interest, and lifetime cost using manual rates and terms. It runs locally in your browser with no uploads.
Open Tool arrow_forwardLoan Payment Calculator
Free loan payment calculator for monthly payment, total paid, and total interest from amount, APR, and term. Runs locally in your browser for private planning.
Open Tool arrow_forwardLoan-to-Value Calculator
Free loan-to-value calculator: find the LTV ratio from your loan amount and property value, in your browser.
Open Tool arrow_forwardLocal Business Schema Generator
Free local business schema generator that runs locally in your browser.
Open Tool arrow_forwardLocal Competitor Comparison Worksheet
Create a worksheet for comparing local competitors from manually gathered notes.
Open Tool arrow_forwardLocal SEO Checklist Generator
Generate a local SEO checklist for service-area pages, listings, reviews, and local content.
Open Tool arrow_forwardLogarithm Calculator
Free logarithm calculator: compute the log of a number in any base, plus natural and base-2 logs, in your browser.
Open Tool arrow_forwardLogo Churn Count Calculator
Calculate churned and retained logos from a starting count and a churn rate. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardLong-Tail Question Generator
Free long-tail question generator that turns a seed topic into who, what, why, how, comparison, and cost question ideas. Runs locally in browser.
Open Tool arrow_forwardLongest Word Finder
Free longest word finder identifies the first maximum-length token and reports its character count. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardLorem Ipsum Generator
Generate placeholder paragraphs for mockups and layouts.
Open Tool arrow_forwardLottery Number Generator
Free lottery number generator: draw unique random numbers for any lottery format, generated fairly in your browser.
Open Tool arrow_forwardLottery Odds Calculator
Free lottery odds calculator: find the odds of matching all numbers in a pick-k-from-n lottery, in your browser.
Open Tool arrow_forwardLTV:CAC Ratio Calculator
Free LTV:CAC ratio calculator that compares customer lifetime value, acquisition cost, and payback health signals. Runs locally in your browser for private...
Open Tool arrow_forwardLuhn Check Digit Calculator
Free Luhn calculator: validate a number against the Luhn algorithm and compute the check digit that makes it valid, entirely in your browser.
Open Tool arrow_forwardMAC Address Formatter
Free MAC address formatter: paste a MAC in any style and get colon, hyphen, and Cisco dot forms plus the OUI vendor prefix, in your browser.
Open Tool arrow_forwardMach to MPH Converter
Free mach to mph converter. It converts Mach values to miles per hour using a stated speed of sound and keeps entered data private in your browser.
Open Tool arrow_forwardMacro Split Calculator
Free macro split calculator that converts daily calories plus protein, carb, and fat percentages into grams per day locally for meal planning.
Open Tool arrow_forwardMacros to Calories Calculator
Free macros to calories calculator: turn protein, carbs, and fat grams into calories and percentages, in your browser.
Open Tool arrow_forwardMagic 8-Ball
Free online Magic 8-Ball: ask a yes-or-no question and get one of the twenty classic answers, drawn in your browser.
Open Tool arrow_forwardManual Currency Converter
Free manual currency converter that uses your entered exchange rate to convert amounts without live financial feeds. Runs locally in your browser for...
Open Tool arrow_forwardManual Currency Rate Calculator
Convert an amount using a manually entered exchange rate with no live lookup or external request. It runs entirely in your browser, with no uploads or accounts.
Open Tool arrow_forwardMargin of Error Calculator
Free margin of error calculator for survey proportions using sample size, expected proportion, and confidence level, entirely in your browser.
Open Tool arrow_forwardMarkdown Previewer
Write Markdown and preview formatted HTML locally in your browser.
Open Tool arrow_forwardMarkdown Table Generator
Free markdown table generator that runs locally in your browser.
Open Tool arrow_forwardMarkdown to HTML Converter
Convert common Markdown headings, lists, links, bold, italic, code, and paragraphs into escaped HTML locally.
Open Tool arrow_forwardMarkdown to JSX Converter
Free Markdown to JSX converter that parses headings, paragraphs, lists, quotes, links, emphasis, inline code, and fenced blocks in your browser.
Open Tool arrow_forwardMarkdown to Table Data
Free Markdown table to CSV converter that parses pipe tables back into rows. Clean docs tables into reusable data locally with copy output now.
Open Tool arrow_forwardMarkup Calculator
Free markup calculator that runs locally in your browser.
Open Tool arrow_forwardMarkup Price Calculator
Free markup price calculator: find the selling price from a cost and markup percentage, in your browser.
Open Tool arrow_forwardMarkup vs Margin Calculator
Free markup and margin converter: convert between markup percentage and profit margin, computed in your browser.
Open Tool arrow_forwardMass Percent Calculator
Free mass percent calculator: find the mass percent of a solute in a solution, computed in your browser.
Open Tool arrow_forwardMass-Energy Calculator (E=mc²)
Free E=mc² calculator: find the energy equivalent of a mass, computed locally in your browser.
Open Tool arrow_forwardMaterial Palette Generator
Free Material-style palette generator: turn one color into a 50–900 tonal scale of tints and shades, computed locally in your browser.
Open Tool arrow_forwardMatrix Determinant Calculator
Free matrix determinant calculator using pivoted elimination for square matrices, with singularity detection and sign tracking in your browser.
Open Tool arrow_forwardMatrix Inverse Calculator
Free matrix inverse calculator using pivoted Gauss-Jordan elimination for nonsingular square matrices, with clean private output in your browser.
Open Tool arrow_forwardMatrix Multiplication
Free matrix multiplication calculator that parses two matrices, checks compatible dimensions, and computes every row-column product in your browser.
Open Tool arrow_forwardMatrix Transpose Calculator
Free matrix transpose calculator that swaps rows and columns for any rectangular numeric matrix and shows the new dimensions in your browser.
Open Tool arrow_forwardMax Heart Rate Calculator
Free maximum heart rate calculator using age-based formulas, computed locally in your browser.
Open Tool arrow_forwardMD5 Checksum Explainer
Free MD5 checksum explainer that compares MD5 with modern browser hash options. Learn why SubtleCrypto omits MD5 locally.
Open Tool arrow_forwardMD5 Hash Generator
Generate a lowercase MD5 digest from UTF-8 text entirely in your browser, copy the 32-character result, and compare known test vectors without uploads.
Open Tool arrow_forwardMeal Prep Container Calculator
Calculate meal-prep containers from total food weight and grams per container. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardMean Confidence Interval
Calculate a z-based confidence interval for a sample mean from its standard deviation, sample size, and critical value in your browser without uploads.
Open Tool arrow_forwardMean, Median & Mode Calculator
Free mean, median, and mode calculator: paste numbers to get the average, middle value, most common value, range, count, and sum in your browser.
Open Tool arrow_forwardMeat Roasting Time Calculator
Free roasting time calculator: estimate cooking time by weight for beef, chicken, pork, lamb, and turkey, in your browser.
Open Tool arrow_forwardMedia Pitch Builder
Free media pitch builder that structures hook, why-now, credibility, story angle, and ask for journalist outreach. Runs locally in your browser for private...
Open Tool arrow_forwardMedian Absolute Deviation
Free median absolute deviation calculator that finds the median, absolute residuals, and robust MAD for pasted numeric data in your browser.
Open Tool arrow_forwardMeeting Agenda Builder
Build a clear meeting agenda with goals, topics, timing, attendees, and next steps. Free private browser tool.
Open Tool arrow_forwardMeeting Cost Calculator
See what a meeting really costs: attendees x salaries x time, calculated live.
Open Tool arrow_forwardMeeting Time Planner
Free meeting time planner that calculates dates and times locally in your browser with specific examples, limits, and copy-ready output. No account required.
Open Tool arrow_forwardMegabytes to Mebibytes Converter
Convert decimal megabytes to binary mebibytes and mebibytes to megabytes using exact byte definitions, with precise results in your browser.
Open Tool arrow_forwardMeme Text Overlay
Free meme text overlay tool that adds top and bottom captions to an uploaded image in canvas and exports the captioned result as a PNG locally.
Open Tool arrow_forwardMention Extractor
Free mention extractor finds at-prefixed handles with letters, numbers, dots, underscores, or hyphens. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardMesh Gradient Generator
Free mesh gradient generator that layers radial gradients into a soft background with copy-ready CSS for hero and card designs.
Open Tool arrow_forwardMessy CSV Normalizer
Clean pasted CSV-style rows by trimming spaces, lowercasing headers, and removing duplicate lines.
Open Tool arrow_forwardMeta Description Length Checker
Write and check meta descriptions for concise search snippets.
Open Tool arrow_forwardMeta Pixel Event Cheat Sheet
Free searchable Meta (Facebook) Pixel cheat sheet: standard events, when to fire each, and copy-ready fbq track snippets — all in your browser.
Open Tool arrow_forwardMeta Robots Bulk Generator
Generate meta robots tags in bulk for URL lists. Choose index, follow, snippets, image previews, and copy implementation-ready output.
Open Tool arrow_forwardMeta Tag Preview Tool
Preview Google-style search snippets and copy title, description, and canonical tags.
Open Tool arrow_forwardMetaphone Encoder
Free Metaphone encoder applies English pronunciation rules to create compact phonetic keys. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardMeters per Second to KM/H
Convert meters per second to kilometers per hour and back with the exact 3.6 factor, six-significant-figure results, and a table in your browser.
Open Tool arrow_forwardMeters to Feet Converter
Convert meters to feet and feet to meters using the international foot definition, with six-significant-figure results calculated in your browser.
Open Tool arrow_forwardMetric Tonnes to US Tons Converter
Convert metric tonnes to US short tons and back using the standard mass relationship, with precise six-significant-figure results in your browser.
Open Tool arrow_forwardMicrons to Millimeters Converter
Convert microns to millimeters and millimeters to microns with exact metric scaling, six-significant-figure results, and a table in your browser.
Open Tool arrow_forwardMidpoint Calculator
Free midpoint calculator: enter two points to get the coordinates of the point exactly halfway between them, computed locally in your browser.
Open Tool arrow_forwardMidpoint Calculator (Geographic)
Free geographic midpoint calculator: find the great-circle midpoint between two coordinates, computed in your browser.
Open Tool arrow_forwardMileage Reimbursement Calculator
Free mileage reimbursement calculator with labeled inputs and an immediate result. It multiplies business distance by a manual rate privately in your browser.
Open Tool arrow_forwardMiles to Feet Converter
Convert miles to feet and feet to miles with the exact 5,280-foot definition, reverse conversion, and a quick reference table in your browser.
Open Tool arrow_forwardMilestone Payment Calculator
Calculate a milestone payment and the remaining balance from a project total. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardMilitary Time Converter
Free military time converter: switch between 12-hour and 24-hour clock formats, computed locally in your browser.
Open Tool arrow_forwardMilligrams to Grams Converter
Convert milligrams to grams and grams to milligrams using exact metric scaling, with six-significant-figure results calculated in your browser.
Open Tool arrow_forwardMillimeters to Centimeters
Convert millimeters to centimeters and centimeters to millimeters using exact metric scaling, with precise results and a table in your browser.
Open Tool arrow_forwardMillimeters to Inches Converter
Convert millimeters to inches and inches to millimeters with precise results and a practical reference table, calculated privately in your browser.
Open Tool arrow_forwardMIME Type Lookup
Free MIME type lookup for common file extensions and content types. Search extension to MIME mappings locally.
Open Tool arrow_forwardMinimum Payment Payoff Calculator
Estimate payoff months and interest from balance, APR, and fixed monthly payment. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardMLA Citation Generator
Free MLA citation generator formats author, title, publisher, year, and URL fields. It runs in your browser without uploads or external requests.
Open Tool arrow_forwardMMHG to KPA Converter
Convert millimeters of mercury to kilopascals and back using the standard pressure factor, with precise results and a quick table in your browser.
Open Tool arrow_forwardMobility Session Time Calculator
Calculate session length from an exercise count and minutes each. Everything is computed locally in your browser, with no uploads, no tracking, and no sign-ups.
Open Tool arrow_forwardModular Inverse Calculator
Free modular inverse calculator that finds an integer inverse modulo m, with labeled assumptions and an immediate result calculated privately in your browser.
Open Tool arrow_forwardModular Scale Calculator
Free modular scale calculator: build a harmonious type scale from a base size and ratio, in your browser.
Open Tool arrow_forwardMolar Mass Calculator
Free molar mass calculator: enter a chemical formula to get its molar mass from standard atomic weights, with parentheses supported, in your browser.
Open Tool arrow_forwardMolarity Calculator
Free molarity calculator: find solution concentration in moles per litre from moles and volume, in your browser.
Open Tool arrow_forwardMoles to Grams Calculator
Free moles to grams calculator: convert moles to mass using molar mass, computed in your browser.
Open Tool arrow_forwardMoment of Inertia Calculator
Calculate rotational inertia for seven standard ideal shapes from mass and radius or length, with formula-specific output in your browser safely now.
Open Tool arrow_forwardMomentum Calculator
Free momentum calculator: find linear momentum from mass and velocity, computed locally in your browser.
Open Tool arrow_forwardMonochromatic Palette Generator
Free monochromatic palette generator: build a palette from one hue at different lightness levels, in your browser.
Open Tool arrow_forwardMonthly Burn Multiple Calculator
Calculate the burn multiple from net burn and net new ARR. Everything is computed locally in your browser, with no uploads, no tracking, and no sign-ups.
Open Tool arrow_forwardMonthly Retainer Calculator
Estimate a monthly service retainer from hours, hourly value, overhead, margin, and tool costs. Free private browser tool.
Open Tool arrow_forwardMoon Phase Calculator
Free moon phase calculator that calculates dates and times locally in your browser with specific examples, limits, and copy-ready output. No account required.
Open Tool arrow_forwardMorse Code Audio Player
Free Morse code audio player converts text to timed dots and dashes and plays local tones. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardMorse Code Translator
Free morse code translator for cleaning, transforming, and checking pasted text. Process content locally in your browser without uploads.
Open Tool arrow_forwardMortar Bag Calculator
Estimate whole mortar bags from wall area, product coverage per bag, and a waste allowance using your own project figures in your browser without uploads.
Open Tool arrow_forwardMortgage Payment Calculator
Free mortgage payment calculator with principal and interest plus monthly tax and insurance estimates. Runs locally in your browser for private planning.
Open Tool arrow_forwardMortgage Payment With Escrow
Estimate monthly mortgage principal, interest, property tax, insurance, and PMI from manual assumptions, calculated privately in your browser.
Open Tool arrow_forwardMortgage Payoff Accelerator
Free mortgage payoff accelerator that estimates interest saved and months reduced from extra monthly payments. Runs locally in your browser for private...
Open Tool arrow_forwardMoving Average Calculator
Free moving average calculator: smooth a series with a simple moving average of any window, in your browser.
Open Tool arrow_forwardMoving Box Volume Calculator
Calculate total moving-box volume from a box count and volume each. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardMPH to KM/H Converter
Convert miles per hour to kilometers per hour and back with the exact international mile factor, precise results, and a quick table in your browser.
Open Tool arrow_forwardMRR Calculator
Free monthly recurring revenue calculator: find MRR and ARR from customers and average revenue, in your browser.
Open Tool arrow_forwardMTU Payload Calculator
Free MTU payload calculator that subtracts IPv4 or IPv6 plus TCP or UDP headers and manual option bytes for transparent packet planning in your browser.
Open Tool arrow_forwardMulch Bag Count Calculator
Calculate mulch bags from area, depth, bag size, and waste. Everything is computed locally in your browser, with no uploads, no tracking, and no sign-ups.
Open Tool arrow_forwardMulch Calculator
Free mulch calculator: find how much mulch you need by area and depth, in cubic yards and bags, computed in your browser.
Open Tool arrow_forwardMultinomial Coefficient
Free multinomial coefficient calculator for category counts, showing total factorial over each group factorial with exact output in your browser.
Open Tool arrow_forwardMurmurHash3 32-bit Generator
Calculate MurmurHash3 x86 32-bit output from UTF-8 text and a numeric seed, with exact tail and finalization steps run in your browser safely now.
Open Tool arrow_forwardMusical Note Duration Calculator
Free musical note duration calculator for a focused result. It converts BPM and note length into milliseconds with private local processing in your browser.
Open Tool arrow_forwardMyszkowski Transposition Cipher
Free Myszkowski transposition cipher handles repeated keyword letters as shared rank groups. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardN-Gram Generator
Free n-gram generator creates consecutive one-word through five-word windows from pasted text. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardNamed Color Explorer
Free CSS named color explorer with searchable swatches, hex values, and quick copy text for common web colors.
Open Tool arrow_forwardNano ID Generator
Free Nano ID generator for short URL-safe identifiers. Pick length and quantity, then generate random IDs locally in your browser.
Open Tool arrow_forwardNATO Phonetic Alphabet Converter
Free NATO phonetic alphabet converter: spell out text as Alpha, Bravo, Charlie for clear speech, in your browser.
Open Tool arrow_forwardNATO Phonetic Converter
Free nato phonetic converter for cleaning, transforming, and checking pasted text. Process content locally in your browser without uploads.
Open Tool arrow_forwardNautical Miles to Kilometers
Convert nautical miles to kilometers and kilometers to nautical miles using the exact 1.852 km definition, with results calculated in your browser.
Open Tool arrow_forwardNearest Web-Safe Color
Free web-safe color tool: find the closest color from the classic 216-color web-safe palette to any hex, computed locally in your browser.
Open Tool arrow_forwardNet Profit Margin Calculator
Free net profit margin calculator: find the percentage of revenue kept as profit after all costs, in your browser.
Open Tool arrow_forwardNet Revenue Retention Calculator
Calculate ending MRR and net revenue retention from a starting MRR and net expansion. It runs entirely in your browser — no uploads, accounts, or tracking.
Open Tool arrow_forwardNet Worth Tracker
Free net worth tracker that totals pasted assets and liabilities to estimate current net worth locally. Runs locally in your browser for private planning.
Open Tool arrow_forwardNeumorphism Generator
Free neumorphism CSS generator: create soft-UI shadow effects with copyable CSS and a live preview, in your browser.
Open Tool arrow_forwardNewsArticle Schema Generator
Generate NewsArticle JSON-LD from headline, author, dates, image, and publisher fields, then copy the structured data in your browser without uploads.
Open Tool arrow_forwardNewsletter Outline Generator
Generate a simple newsletter outline from a topic, audience, and supporting notes.
Open Tool arrow_forwardNewsletter Preview Builder
Free newsletter preview builder that runs locally in your browser.
Open Tool arrow_forwardNewsletter Sponsor Revenue Calculator
Estimate newsletter sponsorship revenue from subscribers and a sponsor CPM. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardNext Birthday Countdown
Free next birthday countdown: find how many days until your next birthday and the age you will turn, in your browser.
Open Tool arrow_forwardNihilist Cipher
Free Nihilist cipher adds repeating keyed Polybius numbers and reverses the numeric sums. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardNoise Texture Generator
Free noise texture generator: create a random grain texture image, downloadable as PNG, in your browser.
Open Tool arrow_forwardNormal Distribution Calculator
Free normal distribution calculator returning z score, density, lower cumulative probability, and upper tail for x, mean, and SD in your browser.
Open Tool arrow_forwardNormal Distribution CDF
Free normal distribution cdf with labeled inputs and an immediate result. It estimates cumulative normal probability below x privately in your browser.
Open Tool arrow_forwardNote Frequency Calculator
Calculate a note frequency from a base pitch and a semitone offset. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardNote Frequency Reference
Free musical note frequency tool: find the exact frequency of any note and play it, in your browser.
Open Tool arrow_forwardNPS Survey Builder
Free NPS survey builder that creates 0-10 question copy, follow-up prompts, segments, and response handling notes. Runs locally in your browser for private...
Open Tool arrow_forwardNPV Calculator
Free net present value calculator: discount a series of cash flows to today at a chosen rate to judge an investment, computed in your browser.
Open Tool arrow_forwardNth Weekday of Month Calculator
Free nth weekday calculator: find the date of, say, the third Monday of a month, computed in your browser.
Open Tool arrow_forwardNumber Base Converter
Free number base converter that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardNumber Formatter
Free number formatter: add thousands separators and set decimal places for any number, in your browser.
Open Tool arrow_forwardNumber List Stats
Free number list stats calculator for sum, average, median, mode, range, variance, and standard deviation from pasted values in your browser.
Open Tool arrow_forwardNumber to Ordinal Converter
Free number to ordinal converter: turn numbers into their ordinal form like 1st, 2nd, 3rd, computed in your browser.
Open Tool arrow_forwardNumber to Words
Free number to words that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardNumbered List Maker
Free numbered list maker for cleaning, transforming, and checking pasted text. Process content locally in your browser without uploads.
Open Tool arrow_forwardNumeric Derivative Calculator
Free numeric derivative calculator using a central difference for common functions at any x value and positive step size, directly in your browser.
Open Tool arrow_forwardOdds & Probability Converter
Free odds to probability converter: switch between odds, probability, and percentage, computed in your browser.
Open Tool arrow_forwardOdds Ratio Calculator
Free odds ratio calculator from a two-by-two event table, returning group odds and their ratio with clear direction entirely in your browser.
Open Tool arrow_forwardOffer Stack Builder
Free offer stack builder that organizes core offer, bonuses, proof, guarantee, urgency, and total value for sales pages. Runs locally in your browser for...
Open Tool arrow_forwardOG Image Generator
Free Open Graph image generator: create a 1200×630 social share image with a title, downloadable as PNG, in your browser.
Open Tool arrow_forwardOG Image Maker
Free OG image maker for composing a 1200 by 630 social preview card in canvas with title, subtitle, colors, and downloadable PNG export locally.
Open Tool arrow_forwardOhm’s Law Calculator
Free Ohm’s law calculator: enter any two of voltage, current, and resistance to find the third plus power, computed locally in your browser.
Open Tool arrow_forwardOil Change Mileage Calculator
Calculate the next oil-change odometer from the current reading and an interval. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardOKLCH Color Explorer
Free OKLCH color explorer that previews lightness, chroma, and hue controls with copy-ready CSS notation and fallback values.
Open Tool arrow_forwardOnboarding Plan Generator
Generate a 30-day onboarding plan for a new hire, contractor, or team member.
Open Tool arrow_forwardOne Rep Max Comparison
Compare Epley, Brzycki, and Lombardi one-rep max estimates from lifted weight and reps. It runs entirely in your browser — no uploads, accounts, or tracking.
Open Tool arrow_forwardOne-Rep Max Calculator
Free one-rep max calculator using the Epley and Brzycki formulas, with percentage training loads, all computed privately in your browser.
Open Tool arrow_forwardOne-Sample Mean Z-Test
Free one-sample mean z-test calculator using sample mean, hypothesized mean, known population deviation, and n with p value in your browser.
Open Tool arrow_forwardOne-Time Pad Cipher
Free one-time pad XOR cipher: encrypt text against a key to hex, and decrypt it back, computed locally in your browser.
Open Tool arrow_forwardOne-Way ANOVA Calculator
Free one-way ANOVA calculator comparing three or more numeric groups with between, within, degrees of freedom, and F output in your browser.
Open Tool arrow_forwardOnline Metronome
Free online metronome: keep time with an adjustable tempo and accented beats, in your browser.
Open Tool arrow_forwardOnline Tone Generator
Free online tone generator: play a pure sine, square, sawtooth, or triangle tone at any frequency, in your browser.
Open Tool arrow_forwardOpen Graph Tag Generator
Create OG and Twitter/X meta tags for social sharing previews.
Open Tool arrow_forwardOrbital Velocity Calculator
Free orbital velocity calculator that estimates ideal circular-orbit speed. Review labeled assumptions and a worked result calculated privately in your browser.
Open Tool arrow_forwardOrdinal Number to Word Converter
Free ordinal number to word converter spells whole-number positions such as forty-second. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardOrganization + sameAs Schema Builder
Free Organization sameAs schema builder that creates JSON-LD with website, logo, contact URL, and social profile links for clarity. Runs locally.
Open Tool arrow_forwardOutlier Detector
Free outlier detector: flag outliers in a data set using the 1.5 IQR rule, computed locally in your browser.
Open Tool arrow_forwardOven Temperature Converter
Free oven temperature converter: switch between Celsius, Fahrenheit, and gas mark, computed locally in your browser.
Open Tool arrow_forwardOvertime Pay Calculator
Free overtime pay calculator: work out total pay from regular and overtime hours and a multiplier, in your browser.
Open Tool arrow_forwardOvulation Window Calculator
Estimate ovulation day and fertile window from cycle length and period start serial day. It runs entirely in your browser — no uploads, accounts, or tracking.
Open Tool arrow_forwardPace Band Calculator
Calculate pace per mile and 5K split targets from race distance and goal time inputs. It runs entirely in your browser — no uploads, accounts, or tracking.
Open Tool arrow_forwardPace to Speed Calculator
Free pace to speed calculator: convert running pace into speed in km/h and mph, computed in your browser.
Open Tool arrow_forwardPacket Overhead Calculator
Free packet overhead calculator that totals payload, headers, trailers, packet count, protocol bytes, and payload efficiency in your browser.
Open Tool arrow_forwardPaint Quantity Calculator
Free paint calculator: enter wall dimensions, coats, and coverage to estimate how many litres or gallons of paint you need, in your browser.
Open Tool arrow_forwardPalindrome Checker
Free palindrome checker for cleaning, transforming, and checking pasted text. Process content locally in your browser without uploads.
Open Tool arrow_forwardPan Area Scale Calculator
Calculate scaled batter weight from a new and old pan area. Everything is computed locally in your browser, with no uploads, no tracking, and no sign-ups.
Open Tool arrow_forwardPangram Checker
Free pangram checker: test whether text uses every letter of the alphabet and see which letters are missing, computed locally in your browser.
Open Tool arrow_forwardPantone-style Name Guesser
Free color name guesser that creates a descriptive, Pantone-style name from hue, saturation, and lightness clues.
Open Tool arrow_forwardParagraph Simplifier
Simplify a dense paragraph with local readability rules, shorter sentences, and complex-word flags. Private browser-only utility.
Open Tool arrow_forwardParallelogram Area Calculator
Free parallelogram area calculator: find the area from base and perpendicular height, in your browser.
Open Tool arrow_forwardParity Bit Calculator
Free parity bit calculator: find the even and odd parity bits for a run of bits, computed locally in your browser.
Open Tool arrow_forwardPAS Copy Framework Builder
Free PAS copy framework builder that turns a problem, pain, and solution into structured copy for emails and landing pages. Runs locally in your browser for...
Open Tool arrow_forwardPascal’s Triangle Generator
Free Pascal triangle generator that builds every row from zero through your selected index and shows binomial coefficients privately in your browser.
Open Tool arrow_forwardPassphrase Generator
Free diceware-style passphrase generator: build memorable multi-word passphrases from a built-in list using secure randomness, all in your browser.
Open Tool arrow_forwardPassword Generator
Generate strong random passwords locally with configurable length and character sets.
Open Tool arrow_forwardPassword Strength Meter
Free password strength meter: estimate entropy in bits, rate strength, and get specific feedback — all locally in your browser with nothing stored.
Open Tool arrow_forwardPastel Color Generator
Free pastel color generator: create soft, random pastel color palettes with hex codes, in your browser.
Open Tool arrow_forwardPaver Base Calculator
Calculate paver base bags from area, depth, bag volume, and waste. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardPayback Period Calculator
Free payback period calculator that estimates months to recover CAC, project cost, or investment from recurring profit. Runs locally in your browser for...
Open Tool arrow_forwardPaycheck Split Planner
Free paycheck split planner that allocates each paycheck across bills, savings, spending, and debt categories. Runs locally in your browser for private...
Open Tool arrow_forwardPayload Remaining Calculator
Calculate remaining and used payload from a rating and a used percentage. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardPayment Plan Splitter
Free payment plan splitter that divides a total into installments with optional deposit, fees, and payment schedule notes. Runs locally in your browser for...
Open Tool arrow_forwardPayroll Burden Calculator
Calculate the burden cost and fully loaded payroll from base pay and a burden rate. It runs entirely in your browser — no uploads, accounts, or tracking.
Open Tool arrow_forwardPendulum Period Calculator
Free pendulum period calculator with labeled inputs and an immediate result. It estimates the small-angle pendulum period privately in your browser.
Open Tool arrow_forwardPercent Composition Calculator
Free percent composition calculator: find each element’s mass percent in a compound, computed in your browser.
Open Tool arrow_forwardPercent Encoding Table
Free percent encoding table that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardPercent Error Calculator
Free percent error calculator: compare a measured value to the true value and get the percentage error, computed in your browser.
Open Tool arrow_forwardPercent of a Number Calculator
Free percent of a number calculator: find what a percentage of a number is, computed locally in your browser.
Open Tool arrow_forwardPercent of Total Calculator
Free percent of total calculator: find what percentage one number is of another, computed in your browser.
Open Tool arrow_forwardPercent Yield Calculator
Free percent yield calculator: find reaction yield from actual and theoretical amounts, in your browser.
Open Tool arrow_forwardPercentage Calculator
Free percentage calculator for percent of a number, increase, decrease, and reverse percentage calculations. Runs locally in your browser for private planning.
Open Tool arrow_forwardPercentage Change Calculator
Free percentage change calculator that compares before and after values with increase, decrease, and absolute difference. Runs locally in your browser for...
Open Tool arrow_forwardPercentage Decrease Calculator
Free percentage decrease calculator: find the percent drop from one value to another, computed in your browser.
Open Tool arrow_forwardPercentage Increase Calculator
Free percentage increase calculator: find the percent growth from one value to another, computed in your browser.
Open Tool arrow_forwardPercentage Off Calculator
Free percentage off calculator: find the sale price and savings from an original price and discount, in your browser.
Open Tool arrow_forwardPercentile Calculator
Free percentile calculator: find the value at any percentile of a data set by interpolation, in your browser.
Open Tool arrow_forwardPercentile Rank Calculator
Free percentile rank calculator with labeled inputs and an immediate result. It finds rank from counts below and equal privately in your browser.
Open Tool arrow_forwardPerfect Number Checker
Free perfect number checker that lists proper divisors, adds them, and tests whether their sum equals the positive integer privately in your browser.
Open Tool arrow_forwardPerformance Review Phrase Helper
Generate balanced performance review phrase prompts for strengths, growth areas, and next steps.
Open Tool arrow_forwardPerson Schema Builder
Free Person schema builder that creates JSON-LD with name, job title, website, image, affiliation, and sameAs profile links. Runs locally in browser.
Open Tool arrow_forwardPersonal Loan Calculator
Calculate personal loan payment, finance charge, and total repayment from amount, APR, and months. It runs locally in your browser with no uploads.
Open Tool arrow_forwardpH Calculator
Free pH calculator: convert between hydrogen ion concentration and pH, with pOH, computed locally in your browser.
Open Tool arrow_forwardPickle Vinegar Dilution Calculator
Calculate vinegar and water volumes for a brine from a parts ratio. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardPicture Srcset Generator
Free picture srcset generator that groups responsive image candidates by MIME type and media rule into escaped HTML with valid markup in your browser.
Open Tool arrow_forwardPig Latin Translator
Free pig latin translator for cleaning, transforming, and checking pasted text. Process content locally in your browser without uploads.
Open Tool arrow_forwardPixel Art Editor
Free mini pixel art editor with a paintable 16 by 16 grid, color picker, clear button, and crisp PNG export that runs locally in your browser.
Open Tool arrow_forwardPixels to Points Converter
Convert CSS pixels to typographic points and points to pixels using the standard 96-DPI relationship, with clear, precise results in your browser.
Open Tool arrow_forwardPizza Dough Ball Calculator
Calculate the weight of each dough ball from total dough and a ball count. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardPizza Dough Calculator
Free pizza dough calculator using baker’s percentages: set ball count, weight, and hydration to get flour, water, salt, and yeast, in your browser.
Open Tool arrow_forwardPlaceholder Image Generator
Free placeholder image generator: create sized placeholder images with custom colors and text, downloadable as PNG, in your browser.
Open Tool arrow_forwardPlaceholder Image URL Builder
Free placeholder image URL builder that creates SVG data URI placeholders with custom size, color, and label locally.
Open Tool arrow_forwardPlate Loading Calculator
Calculate plates per side for a barbell target weight from bar weight and available large plates. It runs entirely in your browser, with no uploads or accounts.
Open Tool arrow_forwardPlayfair Cipher
Free Playfair cipher processes keyed letter pairs through a five-by-five square for both directions. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardPlaying Card Drawer
Draw random playing cards without replacement from a standard 52-card deck, track what remains, and reset the deck locally in your browser without uploads.
Open Tool arrow_forwardPlist to JSON Converter
Free XML plist to JSON converter that parses typed dictionaries, arrays, strings, numbers, booleans, dates, and data with strict errors in your browser.
Open Tool arrow_forwardPoisson Probability Calculator
Free Poisson probability calculator: find the chance of k events given an average rate, in your browser.
Open Tool arrow_forwardPolka Dot Generator
Free polka dot pattern generator: create a dotted pattern image with custom colours, downloadable as PNG, in your browser.
Open Tool arrow_forwardPolybius Square Cipher
Free polybius square cipher for a focused result. It encodes letters as row-column digit pairs and decodes them with private local processing in your browser.
Open Tool arrow_forwardPolygon Area Calculator
Free polygon area calculator using the shoelace formula on ordered coordinate pairs, with signed orientation and absolute area in your browser.
Open Tool arrow_forwardPomodoro Timer
Free pomodoro timer that calculates dates and times locally in your browser with specific examples, limits, and copy-ready output. No account required.
Open Tool arrow_forwardPond Volume Calculator
Calculate pond gallons from length, width, average depth, and shape factor. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardPool Volume Calculator
Free pool volume calculator: find the gallons in a rectangular pool from its size and average depth, in your browser.
Open Tool arrow_forwardPort Number Lookup
Free port number lookup: search common TCP and UDP ports by number or service name, all in your browser.
Open Tool arrow_forwardPorta Cipher
Free Porta cipher applies reciprocal paired-alphabet substitutions with an alphabetic keyword. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardPorter Stemmer
Free Porter stemmer reduces English words with the classic multi-step suffix algorithm. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardPortfolio Rebalance Calculator
Calculate target dollars and buy or sell amounts from total portfolio value and allocation percent. It runs locally in your browser with no uploads.
Open Tool arrow_forwardPosition Size Risk Calculator
Calculate shares or units from account size, risk percent, entry price, and stop price. It runs entirely in your browser — no uploads, accounts, or tracking.
Open Tool arrow_forwardPotential Energy Calculator
Free gravitational potential energy calculator: find stored energy from mass, gravity, and height with PE = mgh, in your browser.
Open Tool arrow_forwardPower Calculator
Free power calculator: find power from work done and time taken, computed locally in your browser.
Open Tool arrow_forwardPower Converter
Free power converter that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardPPM Converter
Free PPM calculator: convert between parts per million, percent, and mg/L, computed locally in your browser.
Open Tool arrow_forwardPrefix Suffix Adder
Free prefix suffix adder for cleaning, transforming, and checking pasted text. Process content locally in your browser without uploads.
Open Tool arrow_forwardPregnancy Due Date Estimator
Free due date estimator using Naegele’s rule (last period + 280 days), showing your estimated due date, gestational age, and trimester — in your browser.
Open Tool arrow_forwardPresent Value Calculator
Free present value calculator: find what a future sum is worth today at a given discount rate and time, computed locally in your browser.
Open Tool arrow_forwardPress Release Boilerplate Generator
Free press release boilerplate generator that runs locally in your browser.
Open Tool arrow_forwardPressure Calculator
Free pressure calculator: find pressure from force and area, in pascals, kPa, and psi, in your browser.
Open Tool arrow_forwardPressure Converter
Free pressure converter that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardPrice Per Square Foot Calculator
Free price per square foot calculator: find the price per square foot from a total price and area, in your browser.
Open Tool arrow_forwardPrice-to-Earnings Ratio Calculator
Free P/E ratio calculator: find a stock’s price-to-earnings ratio from price and earnings per share, in your browser.
Open Tool arrow_forwardPricing Tier Copy Generator
Generate draft pricing tier names, descriptions, feature bullets, and CTA copy for SaaS or service offers.
Open Tool arrow_forwardPrime Factorization Calculator
Free prime factorization calculator: enter a whole number to break it into its prime factors with exponents, computed locally in your browser.
Open Tool arrow_forwardPrime Number Checker
Free prime number checker: test whether a number is prime, see a factor if it is not, and find the next prime — all locally in your browser.
Open Tool arrow_forwardPrint Size Calculator
Free print size calculator that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardProbability Calculator
Free probability calculator: find the probability of an event from favorable and total outcomes, in your browser.
Open Tool arrow_forwardProduct + Offer Schema Builder
Free product offer schema builder that creates Product JSON-LD with price, currency, availability, SKU, brand, and offer URL fields. Runs locally.
Open Tool arrow_forwardProduct Description Formatter
Format rough product notes into benefits, details, use cases, and care notes.
Open Tool arrow_forwardProduct Name Generator
Free product name generator that combines roots, benefits, suffixes, and style choices into practical naming ideas. Runs locally in your browser for private...
Open Tool arrow_forwardProduct Requirements Checklist
Generate a practical product requirements checklist for new features, pages, tools, and internal systems.
Open Tool arrow_forwardProduct Title Length Optimizer
Review product titles for length, clarity, and marketplace readability.
Open Tool arrow_forwardProfit Margin Calculator
Free profit margin calculator that runs locally in your browser.
Open Tool arrow_forwardProject Handoff Checklist
Create a handoff checklist for delivering files, access, documentation, and next steps.
Open Tool arrow_forwardProject Price Calculator
Free project price calculator that runs locally in your browser.
Open Tool arrow_forwardProject Risk Matrix Builder
Score project risks by likelihood and impact, then generate mitigation notes. Free private browser tool.
Open Tool arrow_forwardProjectile Motion Calculator
Free projectile motion calculator: find range, maximum height, and flight time from launch speed and angle, in your browser.
Open Tool arrow_forwardProjectile with Height Calculator
Calculate projectile flight time, range, and peak height from launch speed, angle, and starting elevation with private results in your browser.
Open Tool arrow_forwardProperties to JSON Converter
Free Java properties to JSON converter that parses continuations, separators, escapes, Unicode codes, and dotted nested paths in your browser.
Open Tool arrow_forwardProportion Confidence Interval
Free proportion confidence interval with labeled inputs and an immediate result. It estimates a z interval around a sample proportion privately in your browser.
Open Tool arrow_forwardProportion Margin of Error
Free proportion margin of error with labeled inputs and an immediate result. It calculates a z-based proportion margin of error privately in your browser.
Open Tool arrow_forwardProportion Solver
Free proportion solver: solve a/b = c/d for the missing value by cross-multiplication, in your browser.
Open Tool arrow_forwardProposal Scope Builder
Generate a clear proposal scope section with deliverables, assumptions, exclusions, timeline, and acceptance criteria.
Open Tool arrow_forwardProposal Section Builder
Generate proposal sections for objectives, deliverables, assumptions, exclusions, and next steps.
Open Tool arrow_forwardProtein Intake Calculator
Free daily protein intake calculator from your body weight and goal, computed locally in your browser with nothing uploaded.
Open Tool arrow_forwardProtein Per Meal Calculator
Calculate protein per meal from a daily target and a meal count. Everything is computed locally in your browser, with no uploads, no tracking, and no sign-ups.
Open Tool arrow_forwardPSI to Bar Converter
Convert PSI to bar and bar to PSI using the standard pressure relationship, with six-significant-figure results and a quick table in your browser.
Open Tool arrow_forwardPunycode IDN Converter
Convert internationalized domain labels to ASCII Punycode and decode xn-- labels to Unicode using the RFC 3492 algorithm in your browser safely now.
Open Tool arrow_forwardPX to REM Converter
Free px to rem converter: switch between pixels and rem units at any root font size, in your browser.
Open Tool arrow_forwardPyramid Volume Calculator
Free pyramid volume calculator: find the volume of a square pyramid from base and height, in your browser.
Open Tool arrow_forwardPythagorean Theorem Calculator
Free Pythagorean theorem calculator: enter any two sides of a right triangle to solve the third using a² + b² = c², in your browser.
Open Tool arrow_forwardQR Code Generator
Generate downloadable QR codes for URLs and short text locally in your browser.
Open Tool arrow_forwardQuadratic Equation Solver
Free quadratic equation solver: enter a, b, and c to get the real or complex roots, the discriminant, and the vertex, right in your browser.
Open Tool arrow_forwardQuadratic Factoring Calculator
Free quadratic factoring calculator that finds real roots and writes a polynomial as linear factors from a, b, and c entirely in your browser.
Open Tool arrow_forwardQuantity Discount Calculator
Free quantity discount calculator: find the total and effective unit price after a bulk discount, in your browser.
Open Tool arrow_forwardQuarter Calculator
Free calendar quarter calculator: find which quarter a date is in, plus days elapsed and remaining, computed locally in your browser.
Open Tool arrow_forwardQuarter Fiscal Date Helper
Free quarter fiscal date helper that calculates dates and times locally in your browser with specific examples, limits, and copy-ready output.
Open Tool arrow_forwardQuartile Calculator
Free quartile calculator: find Q1, Q2, Q3, and the interquartile range of a data set, in your browser.
Open Tool arrow_forwardQuery String Builder
Build URL query strings from key value rows with proper encoding, repeated keys, and optional base URL output.
Open Tool arrow_forwardQuery String to JSON
Free query string parser: paste a URL or query string to get its parameters as formatted JSON, decoded locally in your browser.
Open Tool arrow_forwardQuiz Curve Points Calculator
Calculate a curved score by adding curve points to a raw score. Everything is computed locally in your browser, with no uploads, no tracking, and no sign-ups.
Open Tool arrow_forwardQuote Comparison Table
Free quote comparison table that compares vendor bids by price, score, timeline, and weighted value for easier decisions. Runs locally in your browser for...
Open Tool arrow_forwardQuote Extractor
Extract short quotable lines from pasted notes, testimonials, interviews, or article drafts.
Open Tool arrow_forwardQuote Style Converter
Free quote style converter for switching single, double, and backtick string wrappers while escaping inner quotes locally.
Open Tool arrow_forwardQuote Wrapper
Free quote wrapper for cleaning, transforming, and checking pasted text. Process content locally in your browser without uploads.
Open Tool arrow_forwardQuoted-Printable Converter
Encode UTF-8 text as quoted-printable or decode hexadecimal escapes and soft line breaks with strict validation, all locally in your browser.
Open Tool arrow_forwardRace Time Predictor
Free race time predictor using Riegel’s formula to estimate a finish time at another distance, in your browser.
Open Tool arrow_forwardRadial Gradient Generator
Free radial gradient generator with shape, position, and two-color controls for copy-ready CSS backgrounds and soft UI effects.
Open Tool arrow_forwardRaffle Expected Winners Calculator
Calculate expected winners from a ticket count and a win rate. Everything is computed locally in your browser, with no uploads, no tracking, and no sign-ups.
Open Tool arrow_forwardRagbaby Cipher
Free Ragbaby cipher shifts through a keyed alphabet by word number and letter position. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardRail Fence Cipher
Free rail fence cipher: encode or decode text with a zigzag transposition across a chosen number of rails, entirely in your browser.
Open Tool arrow_forwardRain Barrel Yield Calculator
Free rain barrel yield calculator with labeled inputs and an immediate result. It estimates roof runoff from rainfall depth privately in your browser.
Open Tool arrow_forwardRain Barrel Yield Estimator
Estimate rainwater harvest from roof area, rainfall inches, and collection efficiency. It runs entirely in your browser — no uploads, accounts, or tracking.
Open Tool arrow_forwardRaised Bed Soil Calculator
Free raised bed soil calculator with labeled inputs and an immediate result. It calculates soil volume for a rectangular bed privately in your browser.
Open Tool arrow_forwardRamp Slope ADA Calculator
Calculate ramp run from rise and slope ratio, then compare against the common 1 to 12 guideline. It runs entirely in your browser, with no uploads or accounts.
Open Tool arrow_forwardRamp Slope Calculator
Free ramp slope calculator with labeled inputs and an immediate result. It reports rise-to-run ratio, grade, and angle privately in your browser.
Open Tool arrow_forwardRandom Color Generator
Free random color generator: draw a random color with its hex and RGB values and a live swatch, generated in your browser.
Open Tool arrow_forwardRandom Gradient Generator
Free random CSS gradient generator: create linear gradients with copyable CSS, computed in your browser.
Open Tool arrow_forwardRandom Hex Bytes Generator
Free random hex and byte generator using crypto-secure browser randomness. Choose byte length and output format locally.
Open Tool arrow_forwardRandom Hex Color
Free random hex color generator with one-click reroll, copy-friendly output, and a running history of generated colors.
Open Tool arrow_forwardRandom Letter Generator
Free random letter generator: draw random letters of the alphabet in upper or lower case, generated in your browser.
Open Tool arrow_forwardRandom Line Selector
Free random line selector for cleaning, transforming, and checking pasted text. Process content locally in your browser without uploads.
Open Tool arrow_forwardRandom MAC Address Generator
Free random MAC address generator: create valid locally-administered MAC addresses in common formats, in your browser.
Open Tool arrow_forwardRandom Name Picker
Free random name picker: enter a list and draw one winner fairly, with a quick spin animation, all in your browser.
Open Tool arrow_forwardRandom Number Generator
Free random number generator: pick numbers in any range, with an option for unique draws, generated in your browser.
Open Tool arrow_forwardRandom Palette Generator
Free random palette generator with lockable swatches, harmony modes, and copy-ready hex colors for quick design exploration.
Open Tool arrow_forwardRandom PIN Generator
Free random PIN generator: create secure numeric PINs of any length using your browser’s crypto random source.
Open Tool arrow_forwardRandom Sampler
Free random sampler that selects a count or percentage of pasted rows. Shuffle lists, audit datasets, or create review samples locally fast.
Open Tool arrow_forwardRandom Table Range Calculator
Calculate how many die rolls cover a random table from entries and die faces. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardRandom Team Generator
Free random team generator: split a list of names into balanced random teams, computed locally in your browser.
Open Tool arrow_forwardRandom Word Picker
Free random word picker for cleaning, transforming, and checking pasted text. Process content locally in your browser without uploads.
Open Tool arrow_forwardRange Calculator
Free range calculator: find the range, minimum, maximum, and midrange of a data set, in your browser.
Open Tool arrow_forwardRatio Simplifier
Free ratio simplifier that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardRC Time Constant Calculator
Free RC time constant calculator: find the time constant and cutoff frequency from resistance and capacitance, in your browser.
Open Tool arrow_forwardReadability Scorer
Free readability scorer for cleaning, transforming, and checking pasted text. Process content locally in your browser without uploads.
Open Tool arrow_forwardReadability Scores
Free readability checker: score text with Flesch, Flesch-Kincaid, Gunning Fog, SMOG, Coleman-Liau, and ARI at once, in your browser.
Open Tool arrow_forwardReading Assignment Pace Calculator
Calculate pages per day from total pages and days available. Everything is computed locally in your browser, with no uploads, no tracking, and no sign-ups.
Open Tool arrow_forwardReading Time Calculator
Estimate reading time from pasted text.
Open Tool arrow_forwardREADME Badge Generator
Free README badge generator that encodes a label, message, color, logo, style, and target into Markdown and HTML with encoded paths in your browser.
Open Tool arrow_forwardReal Interest Rate Calculator
Free real interest rate calculator with labeled inputs and an immediate result. It adjusts a nominal rate for inflation privately in your browser.
Open Tool arrow_forwardRebar Spacing Calculator
Estimate rebar line count and total length for a slab grid from dimensions and spacing. It runs entirely in your browser — no uploads, accounts, or tracking.
Open Tool arrow_forwardRecipe Hydration Calculator
Calculate water weight from flour weight and a hydration percentage. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardRecipe Scaler
Free recipe scaler: resize any ingredient list up or down by servings, handling fractions, computed locally in your browser.
Open Tool arrow_forwardRecipe Scaler
Free recipe scaler that multiplies each ingredient quantity for new serving counts, handling fractions and mixed numbers, entirely in your browser.
Open Tool arrow_forwardRecipe Schema Builder
Free recipe schema builder that creates Recipe JSON-LD with ingredients, instructions, prep time, cook time, yield, and image fields. Runs locally.
Open Tool arrow_forwardRectangular Prism Calculator
Free rectangular prism calculator: find the volume, surface area, and diagonal from length, width, and height, in your browser.
Open Tool arrow_forwardRecurring Date Generator
Free recurring date generator that calculates dates and times locally in your browser with specific examples, limits, and copy-ready output.
Open Tool arrow_forwardRedirect Chain Planner
Plan old-to-new URL redirects and produce a clean redirect map.
Open Tool arrow_forwardRedirect Mapping CSV Builder
Build a clean redirect mapping CSV from old and new URL lists. Pair rows, choose status codes, and copy migration-ready output locally.
Open Tool arrow_forwardReferral Bonus Pool Calculator
Calculate a referral bonus and the net after payout from new revenue and a bonus rate. It runs entirely in your browser — no uploads, accounts, or tracking.
Open Tool arrow_forwardReferral Request Email Generator
Generate polite referral request emails for clients, colleagues, and partners.
Open Tool arrow_forwardRefinance Break-Even Calculator
Free refinance break-even calculator that compares monthly savings, closing costs, and months to recover fees. Runs locally in your browser for private...
Open Tool arrow_forwardRegex Builder Visual
Free visual regex builder for common pattern pieces. Compose a pattern from options and test it locally in your browser.
Open Tool arrow_forwardRegex Cheat Sheet Builder
Build a custom JavaScript regex cheat sheet by choosing anchors, groups, character classes, quantifiers, and flags.
Open Tool arrow_forwardRegex Replace Playground
Free regex replace playground for testing replacements and capture groups. Preview transformed text locally in your browser.
Open Tool arrow_forwardRegex Tester
Test JavaScript regular expressions against sample text and inspect matches locally.
Open Tool arrow_forwardRelative Risk Calculator
Free relative risk calculator from two cohort event tables, returning both group risks, risk ratio, and risk difference privately in your browser.
Open Tool arrow_forwardRelativistic Time Dilation Calculator
Calculate Lorentz factor and dilated coordinate time from proper time and speed as a fraction of light, with private math in your browser safely now.
Open Tool arrow_forwardREM PX Converter
Convert pixels to rem and rem to pixels with a configurable base font size.
Open Tool arrow_forwardRemove Diacritics
Free accent remover: strip diacritics from text so café becomes cafe and naïve becomes naive, using Unicode normalization in your browser.
Open Tool arrow_forwardRemove Duplicate Words
Free remove duplicate words for cleaning, transforming, and checking pasted text. Process content locally in your browser without uploads.
Open Tool arrow_forwardRemove Emojis
Free emoji remover: strip emojis and pictographs from text, leaving clean plain text, computed in your browser.
Open Tool arrow_forwardRemove Empty Lines
Free empty line remover deletes blank and whitespace-only rows while preserving text rows exactly. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardRemove Extra Spaces
Free remove extra spaces for cleaning, transforming, and checking pasted text. Process content locally in your browser without uploads.
Open Tool arrow_forwardRemove Line Breaks
Free remove line breaks for cleaning, transforming, and checking pasted text. Process content locally in your browser without uploads.
Open Tool arrow_forwardRemove Line Numbers
Free tool to strip leading line numbers from pasted text or code, computed locally in your browser.
Open Tool arrow_forwardRemove Non-ASCII Characters
Free non-ASCII character remover keeps code points zero through 127 and drops the rest. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardRemove Numbers from Text
Free number remover deletes ASCII digits zero through nine while preserving all other text. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardRemove Punctuation from Text
Free punctuation remover strips Unicode punctuation while retaining letters, numbers, symbols, and spacing. Runs privately in your browser without any uploads.
Open Tool arrow_forwardRemove Whitespace
Free whitespace remover: trim, collapse, or strip all spaces and blank lines from text, in your browser.
Open Tool arrow_forwardRenewal Reminder Planner
Create renewal reminder tasks for subscriptions, contracts, domains, and software renewals.
Open Tool arrow_forwardReorder Point Calculator
Free reorder point calculator: find the stock level at which to reorder, including safety stock, in your browser.
Open Tool arrow_forwardRepeated Phrase Finder
Free repeated phrase finder counts recurring two-word through six-word sequences in text. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardResistor Color Code Decoder
Free resistor color code decoder: pick 4 or 5 bands to read the resistance value and tolerance, computed locally in your browser.
Open Tool arrow_forwardRetainer Capacity Calculator
Calculate included hours from a monthly retainer and an hourly rate. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardRetirement Savings Estimator
Free retirement savings estimator that projects balance growth from current savings, monthly contributions, years, and return. Runs locally in your browser...
Open Tool arrow_forwardReturn Policy Draft Helper
Create a plain-language return policy draft checklist for ecommerce products.
Open Tool arrow_forwardRevenue Per Employee Calculator
Calculate revenue per employee from annual revenue and headcount. Everything is computed locally in your browser, with no uploads, no tracking, and no sign-ups.
Open Tool arrow_forwardReverse DNS Pointer Generator
Free reverse DNS pointer generator that converts IPv4 and IPv6 addresses into in-addr.arpa and nibble-reversed ip6.arpa names in your browser.
Open Tool arrow_forwardReverse Each Word
Free tool to reverse the letters of each word while keeping word order, computed locally in your browser.
Open Tool arrow_forwardReverse List Order
Free reverse list tool: flip the order of lines in a list so the last becomes first, in your browser.
Open Tool arrow_forwardReverse Percentage Calculator
Free reverse percentage calculator: find the original amount before a percentage was added or removed, in your browser.
Open Tool arrow_forwardReview Request Email Builder
Free review request email builder that creates polite timing, context, and direct-link drafts for customer review asks. Runs locally in your browser for...
Open Tool arrow_forwardReview Response Generator
Create polite responses to positive, neutral, and negative customer reviews.
Open Tool arrow_forwardReview Schema Generator
Free review schema generator that runs locally in your browser.
Open Tool arrow_forwardRevision Policy Generator
Create a simple revision policy for proposals, service pages, and client onboarding.
Open Tool arrow_forwardReynolds Number Calculator
Calculate Reynolds number from density, speed, characteristic length, and dynamic viscosity, with a pipe-flow guide in your browser safely now.
Open Tool arrow_forwardRGB to LAB Converter
Free CIELAB converter: turn an RGB or hex color into CIE L*a*b* values via XYZ, computed locally in your browser.
Open Tool arrow_forwardRice Grams to Cups Converter
Convert dry white rice grams to US cups and cups to grams using a 185-gram kitchen convention, with practical results calculated in your browser.
Open Tool arrow_forwardRice Water Ratio Calculator
Free rice to water ratio calculator: find the right water for any amount and type of rice, computed locally in your browser.
Open Tool arrow_forwardRight Triangle Calculator
Free right triangle calculator: find the hypotenuse, area, and angles from two legs, in your browser.
Open Tool arrow_forwardRing Size Converter
Free ring size converter that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardRisk Reward Calculator
Calculate trade risk, reward, ratio, and break-even win rate from entry, stop, and target. It runs entirely in your browser — no uploads, accounts, or tracking.
Open Tool arrow_forwardRisk Reward Ratio Calculator
Free risk reward ratio calculator with labeled inputs and an immediate result. It compares target upside with stop downside privately in your browser.
Open Tool arrow_forwardRoad Trip Cost Calculator
Free road trip cost calculator: split fuel costs for a round trip among passengers, computed locally in your browser.
Open Tool arrow_forwardRoad Trip Fuel Calculator
Calculate gallons needed from trip distance and fuel economy. Everything is computed locally in your browser, with no uploads, no tracking, and no sign-ups.
Open Tool arrow_forwardROAS Calculator
Free ROAS calculator that divides revenue by ad spend and shows return on ad spend, profit estimate, and break-even target. Runs locally in your browser for...
Open Tool arrow_forwardRobots Meta Tag Generator
Generate robots meta tags for index, noindex, follow, and nofollow directives.
Open Tool arrow_forwardRobots.txt Generator
Free robots.txt generator that runs locally in your browser.
Open Tool arrow_forwardRobots.txt Tester
Paste robots.txt rules and a path to check whether a user-agent is allowed.
Open Tool arrow_forwardRock Paper Scissors
Free rock paper scissors game: play against the computer and keep score, all running in your browser.
Open Tool arrow_forwardRoman Numeral Converter
Free roman numeral converter that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardRoman Numeral Date Converter
Free Roman numeral date converter: write any date in Roman numerals, the way monuments and film credits do, in your browser.
Open Tool arrow_forwardRoof Pitch Calculator
Free roof pitch calculator: enter rise and run to get the pitch ratio, angle in degrees, and rafter slope factor, computed locally in your browser.
Open Tool arrow_forwardRoof Shingle Calculator
Estimate roofing squares and bundle count from roof area and waste percent. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardROT13 Caesar Cipher
Free rot13 caesar cipher for cleaning, transforming, and checking pasted text. Process content locally in your browser without uploads.
Open Tool arrow_forwardROT47 Converter
Free ROT47 converter: transform printable ASCII with the self-reversing ROT47 cipher, computed locally in your browser.
Open Tool arrow_forwardROT8000 Text Obfuscator
Free ROT8000 text obfuscator rotates non-whitespace UTF-16 characters and reverses itself. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardRoth vs Traditional Calculator
Free Roth vs Traditional calculator that compares after-tax retirement value from current tax and future tax assumptions. Runs locally in your browser for...
Open Tool arrow_forwardRoute Transposition Cipher
Free route transposition cipher fills rows and reads a clockwise spiral through the grid. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardRoyalty Payment Calculator
Calculate a royalty payment and the net to the seller from gross sales and a rate. It runs entirely in your browser — no uploads, accounts, or tracking.
Open Tool arrow_forwardRPG Gold Split Calculator
Calculate an even gold split and the leftover from a total and a player count. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardRule of 72 Calculator
Free Rule of 72 calculator that estimates doubling time from an annual return or interest rate. Runs locally in your browser for private planning.
Open Tool arrow_forwardRunning Key Cipher
Free running key cipher adds or subtracts a nonrepeating passage at least as long as the message. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardRunning Pace Calculator
Free running pace calculator: convert distance and time into pace per km and mile plus speed, computed locally in your browser.
Open Tool arrow_forwardRunning Pace Calculator
Free running pace calculator: enter distance and time to get your pace per kilometre and per mile plus average speed, all in your browser.
Open Tool arrow_forwardRunway & Burn Calculator
Free runway calculator: divide cash on hand by monthly net burn to see how many months a startup can operate, computed in your browser.
Open Tool arrow_forwardSaaS Budget Forecast Tool
Forecast simple monthly SaaS spend from tools, seats, and planned changes.
Open Tool arrow_forwardSAFE Note Calculator
Estimate SAFE conversion shares from investment, valuation cap, discount, and priced round valuation. It runs locally in your browser with no uploads.
Open Tool arrow_forwardSafety Stock Days Calculator
Calculate safety stock units from daily demand and a buffer in days. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardSalary Inflation Adjuster
Free salary inflation adjuster that compares old salary, new salary, inflation rate, and real purchasing power. Runs locally in your browser for private...
Open Tool arrow_forwardSalary to Hourly Calculator
Convert annual salary to hourly, weekly, and monthly equivalents from hours per week and weeks worked. It runs locally in your browser with no uploads.
Open Tool arrow_forwardSales Commission Calculator
Free sales commission calculator: work out commission and total pay from sales and a rate, in your browser.
Open Tool arrow_forwardSales Email Subject Ideas
Free sales email subject idea generator with curiosity, benefit, urgency, referral, and direct subject line formulas. Runs locally in your browser for...
Open Tool arrow_forwardSales Tax Calculator
Free sales tax calculator that runs locally in your browser.
Open Tool arrow_forwardSalt Baker Percent Calculator
Calculate salt weight from flour weight and a salt baker’s percentage. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardSample Count Calculator
Calculate the total samples from a duration and a sample rate. Everything is computed locally in your browser, with no uploads, no tracking, and no sign-ups.
Open Tool arrow_forwardSample Excess Kurtosis
Free sample excess kurtosis calculator using the unbiased Fisher correction to compare tail weight with a normal model privately in your browser.
Open Tool arrow_forwardSample Size Estimator
Free sample size estimator that approximates visitors needed per variant for conversion-rate experiments and surveys. Runs locally in your browser for...
Open Tool arrow_forwardSample Skewness Calculator
Free sample skewness calculator using the adjusted Fisher-Pearson coefficient to quantify asymmetry in pasted data, entirely in your browser.
Open Tool arrow_forwardSand Calculator
Calculate sand volume and weight from area, depth, and density using manual project inputs. It runs entirely in your browser, with no uploads or accounts.
Open Tool arrow_forwardSatoshi BTC Converter
Convert between satoshis and BTC exactly with manual units and no price lookup or network request. It runs locally in your browser with no uploads.
Open Tool arrow_forwardSatoshi to Bitcoin Converter
Free satoshi to bitcoin converter with labeled inputs and an immediate result. It converts between satoshis and bitcoin units privately in your browser.
Open Tool arrow_forwardSavings Goal Calculator
Free savings goal calculator that estimates monthly savings needed to hit a target amount by a deadline. Runs locally in your browser for private planning.
Open Tool arrow_forwardSavings Rate Calculator
Free savings rate calculator: find what percentage of your income you save, and a rough years-to-goal, computed locally in your browser.
Open Tool arrow_forwardSchema Markup Generator
Create simple FAQPage, SoftwareApplication, or Organization JSON-LD locally.
Open Tool arrow_forwardSchema QA Helper
Create a schema QA checklist for reviewing structured data before publishing.
Open Tool arrow_forwardSchema Validator Lite
Free schema validator lite that runs locally in your browser.
Open Tool arrow_forwardScientific Notation Converter
Free scientific notation converter that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardScope Creep Cost Estimator
Free scope creep cost estimator that converts extra requests, hours, rate, and delay risk into a project impact estimate. Runs locally in your browser for...
Open Tool arrow_forwardScope Creep Response Generator
Draft polite scope creep responses that protect boundaries and offer next steps.
Open Tool arrow_forwardScrabble Score Calculator
Free scrabble score calculator that totals standard English Scrabble letter values, with a specific worked example and private local processing in your browser.
Open Tool arrow_forwardScreen Resolution Info
Free screen resolution info that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardScytale Cipher
Free scytale cipher writes text across a chosen number of rows and reads down columns. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardSDBM Hash Generator
Calculate the 32-bit SDBM hash recurrence from UTF-8 bytes with unsigned overflow and copy-ready non-security output in your browser safely now.
Open Tool arrow_forwardSecurity.txt Generator
Free security.txt generator that validates contact methods and writes expiration, languages, canonical, encryption, and credits in your browser.
Open Tool arrow_forwardSelf Employment Tax Calculator
Estimate US self-employment tax from net earnings using the 92.35 percent base and 15.3 percent rate. It runs locally in your browser with no uploads.
Open Tool arrow_forwardSemantic Version Bumper
Free semantic version bumper for previewing major, minor, patch, and prerelease changes locally in your browser.
Open Tool arrow_forwardSemester Credit Load Calculator
Calculate total semester credits from a course count and credits each. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardSemver Range Tester
Free semver tester: check whether a version satisfies a range like ^1.2.0 or >=1.0.0, evaluated locally in your browser.
Open Tool arrow_forwardSentence Length Analyzer
Free sentence length analyzer lists per-sentence word counts and computes the mean length. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardSEO Page Audit Checklist Generator
Generate a focused on-page SEO checklist for service pages, posts, product pages, local pages, and landing pages. Runs locally.
Open Tool arrow_forwardSEO Slug Generator
Turn titles, headings, and product names into clean lowercase URL slugs.
Open Tool arrow_forwardSepia Photo Filter
Free sepia photo filter: give any image a warm vintage sepia tone and download it, in your browser.
Open Tool arrow_forwardSeries & Parallel Resistance
Free resistance calculator: paste resistor values to get the total in series and in parallel at once, computed locally in your browser.
Open Tool arrow_forwardSERP Intent Classifier
Classify pasted search results by informational, commercial, transactional, or navigational intent.
Open Tool arrow_forwardSERP Pixel Width Checker
Preview an SEO title and meta description by estimated Google SERP pixel width. Check truncation risk locally in your browser.
Open Tool arrow_forwardService Area Page Brief Builder
Generate a content brief for local service-area pages.
Open Tool arrow_forwardSet-Cookie Header Builder
Free Set-Cookie header builder that validates names, paths, lifetime, SameSite, Secure, HttpOnly, and value encoding with clear errors in your browser.
Open Tool arrow_forwardSHA-1 Hash Generator
Free sha-1 hash generator that generates a lowercase SHA-1 digest from UTF-8 text, with a specific worked example and private local processing in your browser.
Open Tool arrow_forwardShelf Board Count Calculator
Calculate shelf boards from wall width, shelf count, board length, and waste. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardShipping Margin Calculator
Estimate product margin after item cost, shipping cost, and packaging cost.
Open Tool arrow_forwardShoe Size Converter
Free shoe size converter that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardSI Prefixes Reference
Search SI prefix names, symbols, powers of ten, and multipliers from quecto through quetta using a complete local reference in your browser.
Open Tool arrow_forwardSignature Pad
Free signature pad for drawing a signature on canvas, clearing it, and downloading a transparent PNG locally in your browser for quick mockups.
Open Tool arrow_forwardSignificant Figures Calculator
Free significant figures calculator: round a number to a chosen number of significant figures, in your browser.
Open Tool arrow_forwardSimple Interest Calculator
Free simple interest calculator that estimates interest and final amount from principal, rate, and time. Runs locally in your browser for private planning.
Open Tool arrow_forwardSimple Pivot Table Builder
Free simple pivot table builder that groups CSV rows by one column and counts or sums another. Summarize pasted data locally as CSV output now.
Open Tool arrow_forwardSimple ROI Calculator
Estimate return on investment from benefits, upfront cost, and monthly cost. Free private browser calculator.
Open Tool arrow_forwardSimplify Radical Calculator
Free simplify radical calculator that extracts the largest perfect-square factor from a nonnegative integer square root, directly in your browser.
Open Tool arrow_forwardSitemap Change Detector
Compare old and new sitemap URL lists to find added, removed, and unchanged pages before a migration or launch. Runs locally.
Open Tool arrow_forwardSitemap Index Builder
Free sitemap index builder that combines child sitemap URLs into a valid XML sitemapindex file with optional lastmod dates for SEO. Runs locally.
Open Tool arrow_forwardSitemap Splitter
Free sitemap splitter that runs locally in your browser.
Open Tool arrow_forwardSitemap URL Extractor
Paste XML sitemap content, extract URLs, count them, and copy the list.
Open Tool arrow_forwardSKU Generator
Generate simple SKU patterns from product, category, color, size, and sequence notes.
Open Tool arrow_forwardSleep Cycle Bedtime Calculator
Free bedtime calculator that counts back 90-minute sleep cycles from your wake time so you wake between cycles feeling rested — runs in your browser.
Open Tool arrow_forwardSleep Cycle Calculator
Free sleep cycle calculator: find the best bedtimes to wake refreshed between 90-minute cycles, in your browser.
Open Tool arrow_forwardSlogan Length Checker
Free slogan length checker that scores memorability, word count, character count, rhythm, and clarity for short brand lines. Runs locally in your browser...
Open Tool arrow_forwardSlope Calculator
Free slope calculator: find the slope, angle, and equation of a line through two points, computed locally in your browser.
Open Tool arrow_forwardSlug to Title Case
Free slug to title case converter: turn a URL slug into readable title-case text, computed in your browser.
Open Tool arrow_forwardSlugify Text
Free slug generator: turn any title into a clean, URL-friendly slug with accents removed, computed locally in your browser.
Open Tool arrow_forwardSmall Caps Generator
Free small caps generator: convert text into Unicode small-capital letters that paste into bios and posts anywhere, in your browser.
Open Tool arrow_forwardSmart Quotes Converter
Free smart quotes converter: turn straight quotes into typographic curly quotes and dashes, or convert them back to plain ASCII, in your browser.
Open Tool arrow_forwardSnell’s Law Calculator
Free Snell’s law calculator: find the refraction angle from refractive indices and the incident angle, in your browser.
Open Tool arrow_forwardSocial Banner Sizer
Free social banner sizer that fits uploaded artwork into common platform canvas sizes and exports ready-to-post PNG previews locally in browser.
Open Tool arrow_forwardSocial Caption Length Checker
Free social caption length checker for Instagram, LinkedIn, TikTok, Facebook, and X with live character warnings. Runs locally in your browser for private...
Open Tool arrow_forwardSocial Post Formatter
Free social post formatter that runs locally in your browser.
Open Tool arrow_forwardSocket Address Parser
Free socket address parser that distinguishes hostname, IPv4, bracketed IPv6, raw IPv6, and validated optional ports with strict errors in your browser.
Open Tool arrow_forwardSoftware Overlap Finder
Compare software tools by feature overlap and decide what to keep, replace, or cancel.
Open Tool arrow_forwardSoftwareApplication Schema Builder
Free SoftwareApplication JSON-LD builder: enter name, category, platform, and price to generate valid schema markup, entirely in your browser.
Open Tool arrow_forwardSolar Panel Count Estimator
Estimate panel count from monthly kWh target, sun hours, system efficiency, and panel wattage. It runs entirely in your browser, with no uploads or accounts.
Open Tool arrow_forwardSolid Color Image Generator
Free solid color image generator: create a plain coloured image of any size, downloadable as PNG, in your browser.
Open Tool arrow_forwardSort JSON Keys
Free JSON key sorter: alphabetically sort object keys at every level, computed locally in your browser.
Open Tool arrow_forwardSoundex Encoder
Free Soundex encoder creates four-character surname keys with the standard American rules. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardSpacing Scale Generator
Free spacing scale generator that runs locally in your browser.
Open Tool arrow_forwardSpecific Gravity Calculator
Free specific gravity calculator: find specific gravity from density relative to water, in your browser.
Open Tool arrow_forwardSpecific Heat Calculator
Free specific heat calculator: find the heat energy to change a mass by a temperature using Q = mcΔT, in your browser.
Open Tool arrow_forwardSpeech To Text Dictation
Free speech to text dictation tool using supported browser recognition. Capture spoken notes into editable text locally.
Open Tool arrow_forwardSpeed Converter
Free speed converter that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardSpeed, Distance & Time Calculator
Free speed distance time calculator: solve any one of speed, distance, or time from the other two, in your browser.
Open Tool arrow_forwardSphere Volume Calculator
Free sphere volume calculator: find the volume and surface area of a sphere from its radius, in your browser.
Open Tool arrow_forwardSplit Calculator
Calculate equal split time from total time and number of segments with simple private math. It runs entirely in your browser, with no uploads or accounts.
Open Tool arrow_forwardSplit Complementary Calculator
Free split complementary calculator: find a base color with the two colors beside its complement, in your browser.
Open Tool arrow_forwardSplit the Bill Calculator
Free split the bill calculator: add a tip and divide a restaurant bill evenly among people, in your browser.
Open Tool arrow_forwardSpreadsheet Formula Explainer
Create a plain-language checklist for understanding a spreadsheet formula.
Open Tool arrow_forwardSpring Frequency Calculator
Free spring frequency calculator with labeled inputs and an immediate result. It finds ideal mass-spring natural frequency privately in your browser.
Open Tool arrow_forwardSQL Formatter
Free SQL formatter that adds line breaks around common clauses and keywords. Pretty-print simple queries locally.
Open Tool arrow_forwardSQL IN Clause Generator
Free SQL IN clause generator: turn a list of values into a ready SQL IN clause, computed in your browser.
Open Tool arrow_forwardSQL Minifier
Free SQL minifier that collapses comments and whitespace into a compact one-line query locally in your browser.
Open Tool arrow_forwardSquare Feet to Square Meters
Convert square feet to square meters and square meters to square feet using the exact area factor, with precise results calculated in your browser.
Open Tool arrow_forwardSquare Miles to Square Kilometers
Convert square miles to square kilometers and back using the exact international area factor, with six-significant-figure results in your browser.
Open Tool arrow_forwardSquare Yards to Square Meters
Convert square yards to square meters and back using the exact international area factor, with six-significant-figure results in your browser.
Open Tool arrow_forwardStair Rise & Run Calculator
Free stair calculator: enter total rise to get the number of steps and the rise per step within a comfortable range, computed in your browser.
Open Tool arrow_forwardStandard Deviation Calculator
Free standard deviation calculator with population and sample options, reporting mean, variance, and spread from any list of numbers in your browser.
Open Tool arrow_forwardStandard Error Calculator
Free standard error of the mean calculator from a data set, computed locally in your browser.
Open Tool arrow_forwardStanding Wave Calculator
Calculate harmonic frequency and wavelength for a string or open-open pipe from length, wave speed, and harmonic number locally in your browser.
Open Tool arrow_forwardStarter Feeding Calculator
Calculate flour, water, and total weight for a sourdough feeding. Everything is computed locally in your browser, with no uploads, no tracking, and no sign-ups.
Open Tool arrow_forwardSteps to Distance Calculator
Free steps to distance calculator: convert a step count into kilometres, miles, and calories from your stride and weight, in your browser.
Open Tool arrow_forwardSteps to Distance Estimator
Free steps-to-distance estimator: convert a step count into kilometres and miles from your stride length or height, computed privately in your browser.
Open Tool arrow_forwardStirling Number Calculator
Free Stirling number of the second kind calculator counting partitions of n labeled objects into k nonempty unlabeled groups in your browser.
Open Tool arrow_forwardStock Average Down Calculator
Calculate new average share cost after buying more shares at another price. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardStone to Pounds Converter
Convert stone to pounds and pounds to stone with the exact 14-pound definition, reverse conversion, and a practical reference table in your browser.
Open Tool arrow_forwardStopwatch
Free stopwatch that calculates dates and times locally in your browser with specific examples, limits, and copy-ready output. No account required.
Open Tool arrow_forwardStorage Unit Fill Calculator
Calculate usable and empty volume from unit size and a fill percentage. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardStraddling Checkerboard Cipher
Free straddling checkerboard cipher assigns variable-length digit codes from two row markers. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardStrikethrough Underline Text
Free strikethrough underline text for cleaning, transforming, and checking pasted text. Process content locally in your browser without uploads.
Open Tool arrow_forwardString Entropy Calculator
Free string entropy calculator: measure Shannon entropy and estimate password-style bits of strength for any text, computed locally in your browser.
Open Tool arrow_forwardString Escaper
Free string escaper for JSON, JavaScript, HTML, CSV, and shell snippets. Escape pasted text locally for safer copying.
Open Tool arrow_forwardString Reverser
Free string reverser: reverse the characters of any text, with Unicode support, computed in your browser.
Open Tool arrow_forwardString Unescaper
Free string unescaper for common escaped text snippets. Decode JSON-style, HTML entity, and slash escape strings locally.
Open Tool arrow_forwardStripe Fee Calculator
Free payment fee calculator: work out the processing fee and net on a charge, or what to charge to receive a target amount, in your browser.
Open Tool arrow_forwardStripes Pattern Generator
Free stripes pattern generator: create a two-colour striped image in any direction, downloadable as PNG, in your browser.
Open Tool arrow_forwardStructured Data Type Finder
Free structured data type finder that recommends Schema.org types based on page purpose, content features, and business context. Runs locally.
Open Tool arrow_forwardStudent Loan Calculator
Calculate student loan payment, total interest, and payoff cost from balance, APR, and term with private local math. It runs in your browser with no uploads.
Open Tool arrow_forwardStudent Loan Extra Payment Planner
Calculate how extra monthly student loan payments change payoff time and interest using local math. It runs locally in your browser with no uploads.
Open Tool arrow_forwardStudy Block Planner
Calculate minutes per block from total study time and a block count. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardSubnet Calculator
Free IPv4 subnet calculator: enter an address and CIDR to get the network, broadcast, netmask, wildcard, host range, and host count in your browser.
Open Tool arrow_forwardSubnet Mask Converter
Free subnet mask converter: turn a CIDR prefix into a dotted mask, wildcard, host count, and binary, in your browser.
Open Tool arrow_forwardSubscript Generator
Free subscript generator: turn text and numbers into small lowered Unicode characters you can paste anywhere, in your browser.
Open Tool arrow_forwardSubscription Audit Worksheet
Generate a SaaS subscription audit worksheet for cost, owner, usage, renewal, and cancellation review.
Open Tool arrow_forwardSubscription Revenue Calculator
Free subscription revenue calculator that runs locally in your browser.
Open Tool arrow_forwardSugar Grams to Cups Converter
Convert granulated sugar grams to US cups and cups to grams using a 200-gram kitchen convention, with practical results calculated in your browser.
Open Tool arrow_forwardSum of Squares Calculator
Free sum of squares calculator: find the total sum of squared deviations from the mean, in your browser.
Open Tool arrow_forwardSunrise Sunset Calculator
Free sunrise sunset calculator that calculates dates and times locally in your browser with specific examples, limits, and copy-ready output.
Open Tool arrow_forwardSuperscript Generator
Free superscript generator: turn text and numbers into tiny raised Unicode characters you can paste anywhere, in your browser.
Open Tool arrow_forwardSupport Cost Per Ticket Calculator
Calculate cost per ticket from support payroll and tickets resolved. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardSupport Response Template Generator
Generate calm support response templates for common customer issues, follow-ups, refunds, and bug reports.
Open Tool arrow_forwardSurvey Question Generator
Generate customer survey questions for feedback, product research, satisfaction, and discovery surveys.
Open Tool arrow_forwardSVG Blob Generator — Random Organic Shapes
Generate smooth, random organic blob shapes as clean SVG — tune complexity, edge irregularity, and fill colour, then copy or download. Private in your browser.
Open Tool arrow_forwardSVG Optimizer — Minify SVG Code Online
Minify SVG by stripping comments, XML declarations, and whitespace, then see the exact byte savings and copy the smaller markup — all locally in your browser.
Open Tool arrow_forwardSVG Path Editor Basic
Free basic SVG path editor for previewing one path d attribute, adjusting the viewBox, wrapping it in SVG markup, and copying the result locally.
Open Tool arrow_forwardSVG preserveAspectRatio Previewer
Use this free SVG preserveaspectratio previewer in your browser to preview SVG meet slice alignment and preserveAspectRatio. Output stays private and local.
Open Tool arrow_forwardSVG Stroke Dash Generator
Use this free SVG stroke dash generator in your browser to preview and export SVG stroke dasharray dashoffset and linecap. Output stays private and local.
Open Tool arrow_forwardSVG to CSS Background — Data URI Encoder
Turn any SVG into a compact, URL-encoded CSS background-image data URI you can paste straight into a stylesheet, with a live preview. Private in your browser.
Open Tool arrow_forwardSVG to PNG Converter
Free SVG to PNG converter: paste SVG code and download it as a raster PNG image, computed in your browser.
Open Tool arrow_forwardSVG to PNG Rasterizer
Free SVG to PNG rasterizer that renders pasted SVG markup to a canvas at chosen dimensions, previews the result, and downloads a PNG locally in your browser.
Open Tool arrow_forwardSVG viewBox Helper
Use this free SVG viewBox helper in your browser to calculate and preview SVG viewBox coordinates with padding. Output stays private and local.
Open Tool arrow_forwardSVG Viewer — Preview SVG Code Online
Paste SVG code to preview it instantly, read its width, height, and viewBox, check the byte size, and download the file — all locally in your browser.
Open Tool arrow_forwardSVG Wave Generator — Section Divider Shapes
Generate smooth SVG wave dividers for section transitions — set amplitude, wave count, flip, and colour, then copy the full-width SVG. Private in your browser.
Open Tool arrow_forwardSwap Case Converter
Free swap case tool: invert the case of every letter, turning upper to lower and lower to upper, in your browser.
Open Tool arrow_forwardSwatch to CSS Variables
Free swatch to CSS variables converter that turns a list of hex colors into named :root custom properties for design tokens.
Open Tool arrow_forwardSwatch to SCSS Map
Free swatch to SCSS map converter that turns pasted hex colors into a Sass map for reusable design tokens and themes.
Open Tool arrow_forwardSwatch to Tailwind Config
Free swatch to Tailwind config converter that formats pasted hex colors into a theme.colors snippet for quick setup.
Open Tool arrow_forwardSweat Rate Calculator
Calculate sweat rate from fluid lost and hours exercised. Everything is computed locally in your browser, with no uploads, no tracking, and no sign-ups.
Open Tool arrow_forwardSwim Pace Calculator
Free swim pace calculator: convert distance and time into pace per 100 metres and speed, computed locally in your browser.
Open Tool arrow_forwardSyllable Counter
Free syllable counter for cleaning, transforming, and checking pasted text. Process content locally in your browser without uploads.
Open Tool arrow_forwardSynthetic Division Calculator
Free synthetic division calculator that divides polynomial coefficients by x minus k and reports the quotient and remainder instantly in your browser.
Open Tool arrow_forwardSyrup Ratio Calculator
Calculate water and total syrup from sugar weight and a sugar-to-water ratio. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardTabs Spaces Converter
Free tabs and spaces converter for code snippets. Convert indentation between tabs and configurable spaces locally.
Open Tool arrow_forwardTagline Generator
Free tagline generator that creates concise slogan and positioning line options from a brand, audience, and promise. Runs locally in your browser for...
Open Tool arrow_forwardTailwind Class Sorter
Free Tailwind class sorter that groups layout, spacing, typography, color, and state classes into a steadier order locally.
Open Tool arrow_forwardTailwind Color Class Helper
Free tailwind color class helper that runs locally in your browser.
Open Tool arrow_forwardTailwind To Plain CSS
Free Tailwind to plain CSS mapper for common utility classes. Convert frequent spacing, display, color, and type classes locally.
Open Tool arrow_forwardTap BPM Tester
Free tap BPM tester: tap along to a song to measure its tempo in beats per minute, in your browser.
Open Tool arrow_forwardTap Code Translator
Free tap code translator converts letters to five-by-five row-column pairs and back again. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardTarget Price Calculator
Free pricing calculator: find the selling price that hits a target gross margin from your unit cost, computed locally in your browser.
Open Tool arrow_forwardTarget Weight Date Calculator
Free target weight date calculator: estimate when you will reach a goal weight at a steady rate, in your browser.
Open Tool arrow_forwardTCP Transfer Time Estimator
Free TCP transfer time estimator that combines decimal payload size, sustained throughput, RTT, and handshake round trips with assumptions in your browser.
Open Tool arrow_forwardTDEE Calculator
Free TDEE calculator that estimates BMR, applies an activity factor, and shows daily maintenance calories with the formula visible in your browser.
Open Tool arrow_forwardTea Concentrate Dilution Calculator
Calculate final volume and water to add from concentrate and a dilution factor. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardTemperature Converter
Free temperature converter that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardTerminal Velocity Calculator
Calculate ideal terminal velocity from mass, fluid density, projected area, drag coefficient, and gravity using local math in your browser safely now.
Open Tool arrow_forwardTest Grade Calculator
Free test grade calculator: turn correct answers out of a total into a percentage and letter grade, in your browser.
Open Tool arrow_forwardTestimonial Formatter
Free testimonial formatter that runs locally in your browser.
Open Tool arrow_forwardTestimonial Request Email Generator
Generate polite testimonial request emails with customer-specific context and helpful prompt questions.
Open Tool arrow_forwardTetradic Color Calculator
Free tetradic color calculator: find four colors forming a rectangle on the wheel, with swatches, in your browser.
Open Tool arrow_forwardText Case Converter
Convert text to UPPERCASE, lowercase, Title Case, camelCase, snake_case, and kebab-case.
Open Tool arrow_forwardText Column Extractor
Free column extractor: pull a single column from delimited text by choosing the delimiter and column number, computed locally in your browser.
Open Tool arrow_forwardText Diff Checker
Compare two text blocks and list added or removed lines.
Open Tool arrow_forwardText Encoding Detector
Free text encoding detector that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardText Indenter
Free text indenter for cleaning, transforming, and checking pasted text. Process content locally in your browser without uploads.
Open Tool arrow_forwardText Repeater
Free text repeater for cleaning, transforming, and checking pasted text. Process content locally in your browser without uploads.
Open Tool arrow_forwardText Reverser
Free text reverser for cleaning, transforming, and checking pasted text. Process content locally in your browser without uploads.
Open Tool arrow_forwardText Shadow Generator
Free CSS text-shadow generator: adjust offset, blur, and color with a live preview and copyable CSS, in your browser.
Open Tool arrow_forwardText Similarity Checker
Free text similarity checker: compare two texts with Jaccard and cosine similarity on their words, computed locally in your browser.
Open Tool arrow_forwardText to Binary Converter
Free text to binary converter: turn text into 8-bit binary and decode binary back to text, computed in your browser.
Open Tool arrow_forwardText to Braille Converter
Free text to Braille converter: turn letters and numbers into Unicode Grade 1 Braille patterns, and decode them back, in your browser.
Open Tool arrow_forwardText to HTML Paragraph Converter
Free text to html paragraph converter that runs locally in your browser.
Open Tool arrow_forwardText to Image Generator
Free text to image generator: turn a line of text into a PNG image with custom colours and size, in your browser.
Open Tool arrow_forwardText To Speech Reader
Free text to speech reader that uses your browser voice. Paste text, adjust playback, and listen locally without uploading content.
Open Tool arrow_forwardText Truncator
Free text truncator for cleaning, transforming, and checking pasted text. Process content locally in your browser without uploads.
Open Tool arrow_forwardText Wrapper
Free text wrapper for cleaning, transforming, and checking pasted text. Process content locally in your browser without uploads.
Open Tool arrow_forwardThin Lens Equation Calculator
Free thin lens equation calculator with labeled inputs and an immediate result. It finds image distance and magnification privately in your browser.
Open Tool arrow_forwardThread Splitter
Free thread splitter that breaks long text into numbered posts with character targets for X, Threads, or LinkedIn. Runs locally in your browser for private...
Open Tool arrow_forwardTile Calculator
Free tile calculator: enter the area and tile size to get the number of tiles and boxes needed, including a waste allowance, in your browser.
Open Tool arrow_forwardTime Between Times Calculator
Free time between two times calculator: find the duration between two clock times, including overnight, in your browser.
Open Tool arrow_forwardTime Blocking Slot Calculator
Calculate how many time slots fit from available minutes and slot length. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardTime Card Calculator
Free time card calculator that calculates dates and times locally in your browser with specific examples, limits, and copy-ready output. No account required.
Open Tool arrow_forwardTime Duration Converter
Free time duration converter that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardTime Tracking Summarizer
Free time tracking summarizer that adds pasted hour entries, groups notes, and estimates billable value from a rate. Runs locally in your browser for...
Open Tool arrow_forwardTime Zone Converter
Free time zone converter that calculates dates and times locally in your browser with specific examples, limits, and copy-ready output. No account required.
Open Tool arrow_forwardTimecode Calculator
Free timecode calculator that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardTint and Shade Generator
Free tint and shade generator: create lighter tints and darker shades of any color, in your browser.
Open Tool arrow_forwardTip Calculator
Free tip calculator that splits a bill, tip amount, total, and per-person cost from bill amount and party size. Runs locally in your browser for private...
Open Tool arrow_forwardTire Pressure Converter
Free tire pressure converter: convert between PSI, bar, kPa, and atmospheres, computed locally in your browser.
Open Tool arrow_forwardTire Size Comparison Calculator
Compare tire diameter, circumference, and speedometer error from two tire sizes manually. It runs entirely in your browser — no uploads, accounts, or tracking.
Open Tool arrow_forwardTitle Case Style Guide Converter
Free title case style guide converter applies AP, Chicago, APA, or MLA capitalization rules. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardTitle Tag Length Checker
Check title tag length and snippet truncation risk locally.
Open Tool arrow_forwardTOML To JSON Basic
Free basic TOML to JSON converter for simple key value config files. Parse common TOML subsets locally in your browser.
Open Tool arrow_forwardTone Rewriter
Rewrite short text into clearer, warmer, more direct, more professional, or shorter wording using local browser rules.
Open Tool arrow_forwardTonnage Workout Calculator
Calculate workout tonnage from weight, reps, and sets. Everything is computed locally in your browser, with no uploads, no tracking, and no sign-ups.
Open Tool arrow_forwardTopsoil Calculator
Calculate topsoil cubic yards from area, depth, and waste percentage with private local math. It runs entirely in your browser, with no uploads or accounts.
Open Tool arrow_forwardTorque Converter
Free torque converter: convert between newton-metres, foot-pounds, inch-pounds, and kilogram-force metres, in your browser.
Open Tool arrow_forwardTrading Position Size Calculator
Free trading position size calculator with an immediate result. It estimates units from account risk and stop distance privately in your browser.
Open Tool arrow_forwardTrailer Tongue Weight Calculator
Calculate tongue weight and axle load from trailer weight and a tongue percentage. It runs entirely in your browser — no uploads, accounts, or tracking.
Open Tool arrow_forwardTrailing Whitespace Remover
Free trailing whitespace remover for code and plain text. Strip line-end spaces and tabs locally in your browser.
Open Tool arrow_forwardTraining Load Calculator
Calculate session-RPE training load from minutes and session RPE. Everything is computed locally in your browser, with no uploads, no tracking, and no sign-ups.
Open Tool arrow_forwardTrapezoid Area Calculator
Free trapezoid area calculator: find the area from the two parallel sides and the height, in your browser.
Open Tool arrow_forwardTriadic Color Calculator
Free triadic color calculator: find three evenly spaced colors from any hex, with swatches, in your browser.
Open Tool arrow_forwardTriadic/Tetradic Palette Builder
Free triadic and tetradic palette builder that rotates hue into balanced color-wheel schemes with copy-ready hex output.
Open Tool arrow_forwardTriangle Area Calculator
Free triangle area calculator using Heron’s formula from three sides, with perimeter, computed locally in your browser.
Open Tool arrow_forwardTriangular Number Calculator
Free triangular number calculator with labeled inputs and an immediate result. It calculates the nth triangular number privately in your browser.
Open Tool arrow_forwardTrifid Cipher
Free Trifid cipher fractionates characters through a keyed three-by-three-by-three cube. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardTrim Transparent Image Edges
Use this free trim transparent image edges in your browser to find nontransparent pixel bounds and crop away empty edges. Output stays private and local.
Open Tool arrow_forwardTroy Ounces to Grams Converter
Convert troy ounces to grams and grams to troy ounces using the precious-metals standard, with precise results calculated privately in your browser.
Open Tool arrow_forwardTSV CSV Converter
Free TSV and CSV converter that swaps tab-separated and comma-separated data with quoted fields. Convert spreadsheet exports in your browser.
Open Tool arrow_forwardTSV to CSV Converter
Free TSV to CSV converter: turn tab-separated values into properly quoted CSV, computed locally in your browser.
Open Tool arrow_forwardTV Viewing Distance
Free TV viewing distance calculator: enter a screen size to get the recommended seating range for comfortable and cinematic viewing, in your browser.
Open Tool arrow_forwardTwitter Character Counter
Count Unicode characters against a 280-character Twitter post limit, see remaining or excess length, and edit privately in your browser without uploads.
Open Tool arrow_forwardTwitter Engagement Rate Calculator
Estimate total engagements from a follower count and an engagement rate. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardTwitter/X Card Preview
Free Twitter/X card preview tool for checking title, description, image URL, card type, and copy-ready meta tags locally. Runs locally in browser.
Open Tool arrow_forwardTwo-Square Cipher
Free two-square cipher uses two keyed five-by-five alphabets and reciprocal rectangle pairs. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardTwo-Variable Covariance Calculator
Free two-variable covariance calculator with an immediate result. It calculates population covariance for paired summaries privately in your browser.
Open Tool arrow_forwardTwo’s Complement Converter
Free two’s complement converter: turn a signed decimal into its binary and hex representation at 8–64 bits, and decode binary back, in your browser.
Open Tool arrow_forwardTyping Speed Test
Free typing speed test that measures WPM, accuracy, and progress against a sample paragraph directly in your browser.
Open Tool arrow_forwardTypography Scale Generator
Free typography scale generator that runs locally in your browser.
Open Tool arrow_forwardULID Generator
Free ULID generator: create sortable, timestamp-based unique identifiers using secure randomness, entirely in your browser.
Open Tool arrow_forwardUnicode Character Inspector
Free Unicode character inspector for code points, UTF-8 bytes, and escape forms. Inspect pasted characters locally.
Open Tool arrow_forwardUnicode Escape Converter
Free Unicode escape converter for text to slash-u escapes and escapes back to text. Convert snippets locally in your browser.
Open Tool arrow_forwardUniform Distribution Calculator
Free uniform distribution calculator with labeled inputs and an immediate result. It finds interval probability under a uniform model privately in your browser.
Open Tool arrow_forwardUnit Economics Calculator
Calculate contribution per customer, contribution margin, and CAC payback from ARPU, costs, and CAC. It runs locally in your browser with no uploads.
Open Tool arrow_forwardUnit Price Comparator
Free unit price comparator that compares package prices by size, unit cost, and best-value option. Runs locally in your browser for private planning.
Open Tool arrow_forwardUnix Timestamp Converter
Free Unix timestamp converter: turn epoch seconds into a readable date and any date-time into a timestamp, computed in your browser.
Open Tool arrow_forwardUnix Timestamp Converter
Convert Unix timestamps to local and UTC dates, or dates back to seconds and milliseconds.
Open Tool arrow_forwardUnused License Calculator
Estimate wasted spend from unused seats, licenses, or subscriptions.
Open Tool arrow_forwardUpside Down Text Generator
Free upside down text generator for cleaning, transforming, and checking pasted text. Process content locally in your browser without uploads.
Open Tool arrow_forwardURL Component Parser
Free URL component parser that safely separates protocol, credentials, hostname, port, path, duplicate query pairs, and fragment in your browser.
Open Tool arrow_forwardURL Encoder & Decoder
Free URL encoder and decoder: percent-encode text for safe use in URLs, or decode it back, computed in your browser.
Open Tool arrow_forwardURL Encoder & Decoder
Encode and decode URLs, query parameters, UTM values, and percent-encoded text.
Open Tool arrow_forwardURL Origin Comparator
Free URL origin comparator that normalizes HTTP and HTTPS scheme, hostname, and effective port before testing same-origin status in your browser.
Open Tool arrow_forwardURL Parameter Extractor
Free url parameter extractor that runs locally in your browser.
Open Tool arrow_forwardURL Query Builder
Free URL builder: enter a base URL and key-value parameters to get a correctly encoded query string URL, built locally in your browser.
Open Tool arrow_forwardURL Safe Base64 Converter
Free URL-safe Base64 converter for standard and URL-safe variants. Swap padding, plus, slash, dash, and underscore locally.
Open Tool arrow_forwardUS Cups to Milliliters Converter
Convert US cups to milliliters and milliliters to US cups using the standard legal cup volume, with precise recipe-ready results in your browser.
Open Tool arrow_forwardUS Fluid Ounces to Cups
Convert US fluid ounces to US cups and cups to fluid ounces with exact customary scaling, clear regional labels, and results in your browser.
Open Tool arrow_forwardUS Pints to Liters Converter
Convert US liquid pints to liters and liters to US pints using the exact customary definition, with clear, precise volume results in your browser.
Open Tool arrow_forwardUS Quarts to Liters Converter
Convert US liquid quarts to liters and liters to US quarts with the exact customary factor, six-significant-figure results, in your browser.
Open Tool arrow_forwardUS Tablespoons to Milliliters
Convert US tablespoons to milliliters and milliliters to US tablespoons with exact customary scaling and clear, practical results in your browser.
Open Tool arrow_forwardUS Teaspoons to Milliliters
Convert US teaspoons to milliliters and milliliters to US teaspoons with precise customary-volume results and a quick table in your browser.
Open Tool arrow_forwardUser Agent Parser
Free user-agent parser that estimates browser, operating system, rendering engine, and device hints from a UA string locally.
Open Tool arrow_forwardUTF-8 Byte Counter
Free UTF-8 byte counter: measure characters, bytes, words, and lines of any text, computed locally in your browser.
Open Tool arrow_forwardUtilization Revenue Calculator
Calculate annual revenue from an hourly rate, weekly billable hours, and weeks worked. It runs entirely in your browser — no uploads, accounts, or tracking.
Open Tool arrow_forwardUTM Builder
Add campaign source, medium, campaign, term, and content parameters to any URL.
Open Tool arrow_forwardUTM Cleanup Tool
Clean pasted UTM URLs and normalize common campaign parameter formatting.
Open Tool arrow_forwardUUID Generator
Generate one or many random v4 UUIDs locally in your browser and copy them instantly.
Open Tool arrow_forwardUUID v7 Generator
Free UUID version 7 generator: create time-ordered, sortable UUIDs using secure randomness, in your browser.
Open Tool arrow_forwardValuation Multiple Calculator
Calculate implied business valuation from revenue or EBITDA and a selected multiple. It runs entirely in your browser — no uploads, accounts, or tracking.
Open Tool arrow_forwardValue Proposition Builder
Free value proposition builder that turns audience, problem, outcome, and proof into clear positioning statements for landing pages. Runs locally in your...
Open Tool arrow_forwardValue-Based Pricing Helper
Free value-based pricing helper that estimates a fair project price range from client upside, confidence, and risk. Runs locally in your browser for private...
Open Tool arrow_forwardVariance Calculator
Free variance calculator: find the sample and population variance and standard deviation of a data set, in your browser.
Open Tool arrow_forwardVariant Naming Cleaner
Clean product variant names for consistency across color, size, material, and style.
Open Tool arrow_forwardVAT Calculator
Free VAT calculator that adds or removes VAT from a price and shows net amount, tax amount, and gross amount. Runs locally in your browser for private planning.
Open Tool arrow_forwardVector Angle Calculator
Free vector angle calculator using the dot product and vector magnitudes to return the included angle in degrees, calculated privately in your browser.
Open Tool arrow_forwardVehicle Lease Mileage Calculator
Calculate lease miles used and remaining from an allowance and a used percentage. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardVersion Comparator
Free semantic version comparator that checks whether one version is newer, older, or equal to another locally.
Open Tool arrow_forwardVideo File Size Estimator
Free video file size estimator that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardVideoObject Schema Builder
Free VideoObject schema builder that creates JSON-LD with title, description, thumbnail, upload date, duration, and embed URL fields. Runs locally.
Open Tool arrow_forwardViewport Unit Converter
Free viewport unit converter: switch between pixels and vw or vh for a given viewport size, in your browser.
Open Tool arrow_forwardVigenere Cipher
Free vigenere cipher for cleaning, transforming, and checking pasted text. Process content locally in your browser without uploads.
Open Tool arrow_forwardVO2 Max Estimator
Free VO2 max estimator from your resting and maximum heart rate, computed locally in your browser with nothing uploaded.
Open Tool arrow_forwardVoltage Divider Calculator
Free voltage divider calculator: enter input voltage and two resistors to get the output voltage and current, computed locally in your browser.
Open Tool arrow_forwardVoltage Drop Calculator
Calculate two-conductor voltage drop from one-way length, current, resistance per kilometer, and supply voltage privately in your browser safely now.
Open Tool arrow_forwardVoltage Drop Percent Calculator
Calculate wire voltage drop, load voltage, and percent drop from current, resistance, and length. It runs entirely in your browser, with no uploads or accounts.
Open Tool arrow_forwardVolume Converter
Free volume converter that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardWaist-to-Height Ratio Calculator
Free waist-to-height ratio calculator: gauge health risk from your waist and height, computed locally in your browser.
Open Tool arrow_forwardWaist-to-Hip Ratio Calculator
Free waist-to-hip ratio calculator with health-risk categories by sex, computed locally in your browser.
Open Tool arrow_forwardWalking Commute Calories Calculator
Calculate calories burned from minutes walking and calories per minute. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardWallpaper Calculator
Free wallpaper calculator: estimate how many rolls a room needs from its walls, with waste, computed in your browser.
Open Tool arrow_forwardWater Grams to Cups Converter
Convert water grams to US cups and cups to grams using a 236.6-gram room-temperature convention, with precise results calculated in your browser.
Open Tool arrow_forwardWater Intake Calculator
Free daily water intake calculator based on body weight and exercise, computed locally in your browser with no data uploaded.
Open Tool arrow_forwardWater Intake Estimator
Free water intake estimator that uses body weight and activity minutes to produce a simple daily fluid target in ounces and liters for planning.
Open Tool arrow_forwardWatermark Adder
Free watermark adder that places custom text over an uploaded image with opacity and size controls, then exports a watermarked PNG locally online.
Open Tool arrow_forwardWatts per Kilogram Calculator
Free watts per kilogram calculator with labeled inputs and an immediate result. It normalizes cycling power by body mass privately in your browser.
Open Tool arrow_forwardWave Speed Calculator
Free wave speed calculator: find wave speed from frequency and wavelength, computed in your browser.
Open Tool arrow_forwardWavelength ↔ Frequency
Free wavelength and frequency converter: enter one to get the other for light in a vacuum using c = λf, computed locally in your browser.
Open Tool arrow_forwardWCAG Contrast Checker
Free wcag contrast checker that calculates WCAG contrast ratio for two HEX colors, with a specific worked example and private local processing in your browser.
Open Tool arrow_forwardWebinar Attendance Calculator
Estimate attendees and no-shows from registrants and an attendance rate. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardWebinar Recap Template Generator
Generate a recap template for webinars, workshops, and recorded presentations.
Open Tool arrow_forwardWebSite Schema Generator
Free website schema generator for a focused result. It builds WebSite JSON-LD with an optional SearchAction with private local processing in your browser.
Open Tool arrow_forwardWeek Number Calculator
Free week number calculator that calculates dates and times locally in your browser with specific examples, limits, and copy-ready output. No account required.
Open Tool arrow_forwardWeek of the Month Calculator
Free week of the month calculator: find which week of the month a date falls in, computed locally in your browser.
Open Tool arrow_forwardWeekly Volume Lift Calculator
Calculate weekly rep volume from sets and reps per set. Everything is computed locally in your browser, with no uploads, no tracking, and no sign-ups.
Open Tool arrow_forwardWeeks Between Dates Calculator
Free weeks between dates calculator: count full weeks and leftover days between two dates, computed locally in your browser.
Open Tool arrow_forwardWei Gwei ETH Converter
Convert wei, gwei, and ETH units exactly with manual values and no live crypto pricing. It runs entirely in your browser — no uploads, accounts, or tracking.
Open Tool arrow_forwardWeight Mass Converter
Free weight mass converter that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardWeight on Other Planets
Free planet weight calculator: see what you would weigh on other planets and the Moon, computed locally in your browser.
Open Tool arrow_forwardWeighted Average Calculator
Free weighted average calculator: combine values with their weights into a single weighted mean, computed in your browser.
Open Tool arrow_forwardWeighted Grade Calculator
Free weighted grade calculator: combine assignment scores and their weights into an overall grade, in your browser.
Open Tool arrow_forwardWelch Two-Sample T-Test
Free Welch two-sample t-test calculator for two numeric samples, returning means, t statistic, degrees of freedom, and p range in your browser.
Open Tool arrow_forwardWheel Offset Change Calculator
Calculate the offset change and poke from a new and old wheel offset. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardWhite Noise Generator
Free white noise generator: play soothing white noise for focus or sleep, generated in your browser.
Open Tool arrow_forwardWhitespace Visualizer
Free whitespace visualizer for cleaning, transforming, and checking pasted text. Process content locally in your browser without uploads.
Open Tool arrow_forwardWholesale Margin Calculator
Calculate a wholesale price and the discount off retail from a retail price. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardWildcard Mask Calculator
Free wildcard mask calculator: convert a subnet mask to the inverse wildcard mask used in ACLs, computed locally in your browser.
Open Tool arrow_forwardWilks Calculator
Calculate a classic Wilks coefficient and score from bodyweight, lifted total, and coefficient category in kilograms, privately in your browser.
Open Tool arrow_forwardWind Chill Calculator
Free wind chill calculator using the official formula: enter temperature and wind speed to get the feels-like temperature, in your browser.
Open Tool arrow_forwardWind Speed Converter
Free wind speed converter: convert between mph, km/h, m/s, and knots, computed locally in your browser.
Open Tool arrow_forwardWindow Film Area Calculator
Calculate total window film area from a window count and area each. Everything is calculated locally in your browser, with no uploads or sign-ups.
Open Tool arrow_forwardWine Bottle Servings Calculator
Free wine bottle servings calculator with labeled inputs and an immediate result. It estimates pours from bottle and serving sizes privately in your browser.
Open Tool arrow_forwardWine Servings Calculator
Calculate standard servings from bottle volume and pour size with quick private arithmetic. It runs entirely in your browser, with no uploads or accounts.
Open Tool arrow_forwardWord & Character Counter
Count words, characters, sentences, and reading time as you type. Free and 100% private.
Open Tool arrow_forwardWord Frequency Counter
Free word frequency counter: tally how often each word appears in your text, ranked by count, computed in your browser.
Open Tool arrow_forwardWord Wrap Text
Free word wrap tool: rewrap text to a fixed line width without breaking words, computed locally in your browser.
Open Tool arrow_forwardWordPress Slug Cleaner
Clean post titles into short WordPress-safe URL slugs.
Open Tool arrow_forwardWords to Number
Free words to number that converts values instantly in your browser. Includes examples, formulas, limits, copy-ready output, and local privacy.
Open Tool arrow_forwardWords With Friends Score Calculator
Free Words With Friends score calculator totals the game tile values for any entered word. Runs in your browser; no uploads or accounts are used.
Open Tool arrow_forwardWork Done Calculator
Free work done calculator: find mechanical work from force, distance, and angle, computed in your browser.
Open Tool arrow_forwardWorkdays in a Month Calculator
Free workdays in a month calculator: count the weekdays and weekend days in any month, computed locally in your browser.
Open Tool arrow_forwardXML Formatter
Free xml formatter that runs locally in your browser.
Open Tool arrow_forwardXML Sitemap Builder
Free XML sitemap builder that turns a pasted URL list into valid sitemap XML with lastmod, changefreq, priority, and browser-only output. Runs locally.
Open Tool arrow_forwardXML Sitemap Validator Lite
Paste an XML sitemap to check parsing, loc tags, duplicate URLs, invalid URLs, and lastmod formatting. Private browser-only validation.
Open Tool arrow_forwardXML to CSV Converter
Free XML to CSV converter that parses balanced markup, finds repeated row elements, unions child columns, and quotes CSV values in your browser.
Open Tool arrow_forwardXML to JSON Converter
Free XML to JSON converter that parses elements, attributes, and text into structured JSON. Convert snippets privately in your browser quickly.
Open Tool arrow_forwardXOR Cipher
Free XOR cipher tool: encrypt text to hex with a repeating key and decrypt it back, all locally in your browser. For learning, not real security.
Open Tool arrow_forwardXYZ Color Converter
Use this free XYZ color converter in your browser to convert sRGB hex colors to CIE XYZ D65 and back. Output stays private and local. No upload is needed.
Open Tool arrow_forwardYAML Linter Lite
Free lightweight YAML linter that flags tabs, odd indentation, and common key spacing mistakes locally in your browser.
Open Tool arrow_forwardYAML to JSON Converter
Free yaml to json converter that runs locally in your browser.
Open Tool arrow_forwardYards to Meters Converter
Convert yards to meters and meters to yards using the exact international yard definition, with precise results and a quick table in your browser.
Open Tool arrow_forwardYear Quarter Progress Calculator
Calculate days elapsed and remaining in a quarter from its length and an elapsed percentage. It runs entirely in your browser, with no uploads or accounts.
Open Tool arrow_forwardYeast Conversion Calculator
Convert instant yeast to active dry and fresh yeast equivalents with local cooking math. It runs entirely in your browser — no uploads, accounts, or tracking.
Open Tool arrow_forwardYes or No Generator
Free yes or no generator: get a random yes, no, or maybe to settle a decision, drawn instantly in your browser.
Open Tool arrow_forwardYouTube Title Length Checker
Free youtube title length checker that runs locally in your browser.
Open Tool arrow_forwardYouTube Watch Time Calculator
Estimate total watch time in minutes and hours from views and average view duration. It runs entirely in your browser — no uploads, accounts, or tracking.
Open Tool arrow_forwardZ-Index Scale Planner
Free z-index scale planner that runs locally in your browser.
Open Tool arrow_forwardZ-Score Calculator
Free z-score calculator: find how many standard deviations a value sits from the mean, computed locally in your browser.
Open Tool arrow_forwardZ-Score to Percentile Calculator
Free z-score to percentile calculator: convert a z-score to its percentile under the normal curve, in your browser.
Open Tool arrow_forwardZ85 Encoder and Decoder
Encode hexadecimal byte groups with ZeroMQ Z85 or decode Z85 into exact lowercase hex, using strict block validation locally in your browser.
Open Tool arrow_forwardZalgo Glitch Text Generator
Free zalgo glitch text generator for cleaning, transforming, and checking pasted text. Process content locally in your browser without uploads.
Open Tool arrow_forwardZodiac Sign Finder
Free zodiac sign finder: discover your astrological star sign from your birth date, computed locally in your browser.
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