Base Converter

Free

Type a number in binary, octal, decimal, hex or any base 2–36 and see all the others update live.

Type in any base — the rest follow

Binary

Base 2 · 0-1

Octal

Base 8 · 0-7

Decimal

Base 10 · 0-9

Hexadecimal

Base 16 · 0-9 A-F

Custom base

2–36

Binary (grouped)1111 1111

Hex (grouped)FF

0x…0xff

0b…0b11111111

0o…0o377

Digits3

Bits8

Integers are exact at any size (BigInt). Fractions use floating point, so expect the usual rounding at long precisions.

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