Instant Base Conversions

Number Base Converter

Convert numbers between Binary (Base 2), Octal (Base 8), Decimal (Base 10), Hexadecimal (Base 16), and custom bases.

Select source base and type your number value

From Base

Value

Binary (Base 2)

11111111

Octal (Base 8)

377

Decimal (Base 10)

255

Hexadecimal (Base 16)