File Size Converter
Convert file sizes between B, KB, MB, GB and TB, in decimal or binary units.
Convert file size
Calculated instantly in your browser.
Equation
| Unit | Value |
|---|
How to use it
- Enter a file size and choose its unit.
- Choose the unit you need.
- Compare decimal (KB, MB) and binary (KiB, MiB) values in the table.
Examples
25 MBemail attachment limit =25,000 KB(decimal).1 GB = 1,000 MB, but1 GiB = 1,024 MiB.4.7 GBDVD ≈4.38 GiB.
Storage makers and most web services use decimal units (1 KB = 1,000 bytes). Windows reports sizes in binary units (1,024 bytes) but labels them KB, MB and GB, so the same file can show slightly different numbers.