Base & Unit Converter
Base & Unit Converter
Convert numbers between binary, octal, decimal, and hex — plus data sizes and temperatures.
All conversion math runs in this tab.
Radix
Data size
Temperature
Value
base 10
Value is in base
2
8
10
16
Conversions
Binary (base 2)
11111111
Octal (base 8)
377
Decimal (base 10)
255
Hexadecimal (base 16)
ff
Arbitrary precision — values beyond 64 bits still convert exactly. Prefixes (0x, 0b, 0o) are accepted in their matching base.