What bases does this tool support?
Decimal, hexadecimal, binary and octal.
Developer Tools
Number Base Converter
Convert numbers between decimal, hexadecimal, binary and octal.
Convert integer values across common programming bases using BigInt, so large values stay precise in the browser.
Base Converter
Convert integers between decimal, hexadecimal, binary, and octal.
Related tools
How to use
- 1. Enter a number
Paste a decimal, hexadecimal, binary, or octal integer.
- 2. Select the source base
Choose the base that matches your input value.
- 3. Review each output
Copy the decimal, hexadecimal, binary, and octal values together.
Example
Hexadecimal `FF` converts to decimal `255`, binary `11111111`, and octal `377`.
FAQ
Does it work locally?
Yes, all conversions happen in your browser.
Can I convert hexadecimal to binary?
Yes, enter the hexadecimal number and select hexadecimal as the input base.