Convert between bits, bytes, KB, MB, GB, and TB.
The Data Storage Unit Converter switches a file or drive size between bits, bytes, kilobytes, megabytes, gigabytes and terabytes using the standard binary (1024-based) convention used by operating systems.
This calculator uses 1024 as the base (binary convention: 1 KB = 1024 bytes), which is how most operating systems report file sizes, rather than the 1000-based SI convention used on some storage packaging.
Converting 1 GB to MB: 1 GB = 1024 MB. Converting 500 MB to GB: 500 ÷ 1024 ≈ 0.488 GB.
Common units include bits, bytes, kilobytes (KB), megabytes (MB), gigabytes (GB), and terabytes (TB).
It depends on the standard used — decimal (SI) units use 1,000 as the multiplier, while binary units (technically KiB, MiB, GiB) use 1,024. This ambiguity is why file sizes sometimes look different than expected on your device.
Manufacturers typically use decimal (1,000-based) units for marketing, while operating systems often display capacity using binary (1,024-based) units, making the actual usable space appear smaller.