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Number Base Converter

Convert numbers between any bases 2-36 online — binary, octal, decimal, hex and more.

About this tool

Convert a number from one base to another, for any base from 2 to 36. Decimal, binary, octal and hexadecimal are just special cases; the decimal value is shown too.

Frequently asked questions

What bases can I use?

Any base 2 through 36, using digits 0-9 then a-z. Base 2 is binary, 8 octal, 16 hex.

Does it handle decimals or negatives?

It converts whole numbers. Fractions are not supported.

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