Networking & Bits Tools
Calculators for network and low-level work: CIDR and IPv6 subnets, IP ranges, MTU payloads and packet overhead, download times, chmod permissions, bit shifts, endianness and Gray code. Handy at the console when you need the number, not a lecture.
Bit 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 ToolDownload Time Calculator
Free download time calculator: estimate how long a file takes to transfer at a given connection speed, in your browser.
Open ToolMTU 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 ToolPacket Overhead Calculator
Free packet overhead calculator that totals payload, headers, trailers, packet count, protocol bytes, and payload efficiency in your browser.
Open ToolEndianness Converter
Free endianness converter: swap the byte order of a hex value between big-endian and little-endian, in your browser.
Open ToolGray Code Converter
Free Gray code converter: turn binary into reflected Gray code and back, with the decimal value, computed locally in your browser.
Open ToolIP 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 ToolHex 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 ToolIP 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 ToolIP 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 ToolIPv6 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 ToolMAC 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 ToolTwo’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 ToolBandwidth 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 ToolBitwise 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 ToolCIDR 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 ToolCIDR 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 ToolCIDR Overlap Checker
Free CIDR overlap checker that normalizes two IPv4 blocks, detects intersection, and reports the exact shared address range in your browser.
Open ToolDNS 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 ToolHamming Distance Calculator
Free Hamming distance calculator: count the differing positions between two equal-length strings, computed in your browser.
Open ToolIEEE-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 ToolIPv4 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 ToolParity Bit Calculator
Free parity bit calculator: find the even and odd parity bits for a run of bits, computed locally in your browser.
Open ToolPort Number Lookup
Free port number lookup: search common TCP and UDP ports by number or service name, all in your browser.
Open ToolRandom MAC Address Generator
Free random MAC address generator: create valid locally-administered MAC addresses in common formats, in your browser.
Open ToolSubnet Mask Converter
Free subnet mask converter: turn a CIDR prefix into a dotted mask, wildcard, host count, and binary, in your browser.
Open ToolText 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 ToolBinary 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 ToolBits & Bytes Converter
Free bits and bytes converter: convert between bits, bytes, and their decimal multiples, computed locally in your browser.
Open ToolChmod 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 ToolCIDR Aggregate Calculator
Free CIDR aggregate calculator that normalizes IPv4 blocks, removes contained entries, and recursively merges aligned siblings in your browser.
Open ToolCIDR 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 ToolDNS 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 ToolIPv6 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 ToolIPv6 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 ToolReverse 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 ToolSocket 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 ToolSubnet 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 ToolTCP 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 ToolWildcard Mask Calculator
Free wildcard mask calculator: convert a subnet mask to the inverse wildcard mask used in ACLs, computed locally in your browser.
Open ToolIP 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 ToolBrowse tools by category
- Business 25
- Career & Resume 12
- Color & Palette 201
- Converters & Units 234
- Cooking & Kitchen 28
- Crypto & Security 58
- CSS & Design 341
- Data, CSV & JSON 164
- Developer & Code 190
- Finance & Money 182
- Fun & Games 35
- Health & Fitness 58
- Home & DIY 56
- Images & Media 242
- Legal & Policy 14
- Marketing & Social 76
- Math & Numbers 134
- Networking & Bits 41
- PDF Tools 11
- Science & Engineering 80
- SEO & Schema 95
- Text & Writing 123
- Time & Date 60
- Travel & Geo 14