Number Base Converter

Convert between binary, decimal, hex, octal and any base up to 36 — even huge numbers.

Number

Input base

Base N36

How to use Number Base Converter

Any base 2–36Beyond binary and hex: base 32, base 36 and everything in between.
Huge numbersArbitrary precision — no rounding at 2^53.
Readable outputBinary grouped in nibbles, hex in bytes, decimal with separators.

Can I paste 0xFF or 0b1010?

Yes, the 0x, 0b and 0o prefixes are understood for their bases.

Are negative numbers supported?

Yes, with a leading minus sign.

Is it free?

Yes.

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