Number Base Converter — Binary, Octal, Decimal, Hex
Convert numbers between binary, octal, decimal, hexadecimal, and any base from 2 to 36. Browser-only, no signup.
Number Base Converter
Bin · Oct · Dec · Hex
How to use this tool
1. Enter your input. Use the form above — all processing happens in your browser, no data is sent to any server.
2. View the result. The output appears instantly below the input. Copy any value with one click.
3. Explore related tools. See the related tools section below for adjacent calculators and converters.
4. Bookmark this page. This tool runs entirely client-side, so it works offline once loaded. Add it to your bookmarks for quick access.
Frequently Asked Questions
Everything you need to know about this currency pair
Binary (base 2, digits 0-1) is the language of computers. Octal (base 8, digits 0-7) is used in Unix file permissions. Decimal (base 10, digits 0-9) is the human standard. Hexadecimal (base 16, digits 0-9 + A-F) is used for memory addresses, color codes, and MAC addresses.