Numbers & Units

Convert number bases, byte and bit units, bitrates, durations, and percentages.

Given any two of data size, transfer rate, and transfer time, calculate the third — with bit- and byte-based units.

Convert between bits and bytes and every decimal (kB, MB, GB) and binary (KiB, MiB, GiB) multiple, with 1 byte = 8 bits.

Convert integers between binary, octal, decimal, hexadecimal, and any base from 2 to 36, with optional fixed-width two's-complement output.

Work out a percentage of a value, what percent one number is of another, and the percentage increase or decrease between two numbers.