Number Base Converter

Convert numbers between binary, octal, decimal, hexadecimal and any base from 2 to 36.

About this tool

Enter a number in one base and see it in the others instantly. Large integers are supported.

How to use Number Base Converter

  1. Type a value in any field.
  2. Read the other bases update.
  3. Use the custom base box for bases up to 36.

Frequently asked questions

What digits does hex use?

0 to 9 and A to F.

Are negative numbers supported?

Yes, with a leading minus sign. Fractions are not supported.