💻 Developer Tools
Number Base Converter
Enter a number in any base — binary, octal, decimal, or hexadecimal — to see it converted to all the others at once.
Binary
11111111Octal
377Decimal
255Hexadecimal
FFHow to use this tool
- 1Select the base of the number you're entering.
- 2Type the number.
- 3Its equivalent in the other three bases appears instantly.
Frequently asked questions
- What bases are supported?
- Binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16).
- Is there a limit on how large a number I can convert?
- Numbers are handled as JavaScript BigInt, so very large integers convert correctly without precision loss.