Convert integers between binary, octal, decimal and hex (any base 2 to 36), and view a hexdump of text. Everything runs in your browser.
Convert integers between binary, octal, decimal and hex (any base 2 to 36), and view a hexdump of text. Runs entirely in your browser.
Programmers constantly move numbers between bases: a hex colour, a binary flag mask, an octal permission, a decimal id. A hexdump, meanwhile, shows the exact bytes of some text alongside their printable characters, the way tools like xxd do. This tool does both: arbitrary base conversion for integers and a clean hexdump of any text you paste.
Input:
255 (decimal) to hex
Output:
ff
What bases are supported?
Any base from 2 to 36. The dropdown offers binary, octal, decimal and hex, and the engine handles the full range using 0-9 and a-z as digits.
Does it handle very large numbers?
Yes. Conversion uses big integers, so numbers far beyond 64 bits convert exactly without rounding.
What is the hexdump for?
Inspecting the exact bytes of text, including hidden whitespace or multi-byte UTF-8 characters, which is handy for debugging encodings.
Is anything uploaded?
No. Everything is computed locally in your browser.