Number Base Converter
Convert numbers between binary, octal, decimal, and hex.
Binary, decimal, and hex
Programmers move constantly between bases: decimal 255 is FF in hexadecimal and 11111111 in binary. This converts an integer between binary, octal, decimal, and hexadecimal in one step.
It is a daily tool for debugging: reading a hex memory address, decoding a permission bitmask in binary, or checking a color's hex value against its decimal RGB components.
Where each is used
Hex is compact for bytes and colors, binary for bit-level work. The conversion runs entirely in your browser and nothing is uploaded. Your numbers are converted on the page and never uploaded.
Frequently Asked Questions
How does the number base converter work?
The converter parses the input in hexadecimal and prints decimal, binary, octal, and hexadecimal forms. Hex ff becomes decimal 255.
When should I use this tool?
Use it for debugging flags, colors, binary masks, embedded systems, and programming exercises.
What is the main limitation?
Very large integers may exceed JavaScript safe integer precision.
Is this converter private?
Yes. It runs entirely in your browser, so your values are not uploaded or stored.
More free browser utilities for conversion, formatting, and technical cleanup.