About this tool
Convert raw byte counts to friendly sizes and back, showing both 1024-based (KiB) and 1000-based (KB) units, all in your browser.
Frequently asked questions
What is the difference between KB and KiB?
KB is decimal (1000 bytes) while KiB is binary (1024 bytes); operating systems and drive makers often disagree, so both are shown.
What units can I type to convert back?
Any unit like KB, MB, GB or their binary forms KiB, MiB, GiB — for example 1.5 GB or 700 MiB.