Number base converter

Convert between binary, octal, decimal and hexadecimal, even for very large numbers, with no rounding.

Base to base and back

Binary (base 2)

Octal (base 8)

Decimal (base 10)

Hexadecimal (base 16)

Group digits to make them easier to readAdd 0b, 0o and 0x in frontCapital letters for hex (FF, not ff)

Type a number in any box. The others follow.