Type a number in binary, octal, decimal, hexadecimal or any base from 2 to 36 and see it in all the others at once. Numbers of any size work.
loading toolHow to convert number bases
- Type in any box.
- The other boxes update instantly.
- Use “Any base” for bases like 3, 12 or 36.
Questions
Is there a size limit?
No practical one: the tool uses BigInt, so even huge numbers convert exactly.
Is my data private?
Yes. Everything happens inside your own browser: nothing you type or choose is uploaded to us or anyone else.
Is it free?
Completely free, with no sign-up, no watermark and no limit on how many times you use it. Light ads keep the site running.
