File Size Unit Converter
Convert between digital storage units instantly. Understand the difference between binary (1024) and decimal (1000) measurements.
Standard for Computing (GiB)
B
0KB
0MB
0GB
0TB
0Bytes, Kilobytes, and Gibibytes?
Digital storage units can be confusing. Operating systems like Windows use Binary math (1024 bytes = 1 KB), while hard drive manufacturers and macOS use Decimal math (1000 bytes = 1 KB).
Our File Size Calculator lets you toggle between these standards so you know exactly how much space your files will actually take up.