Convert & Encode
Data Size Converter
Convert between bytes, KB, MB, GB, TB, and PB, in binary or decimal.
Convert & Encode
Convert data storage sizes
This tool converts digital storage between bytes and their multiples. It supports both standards: binary, where one KB is 1024 bytes and which is how operating systems usually count, and decimal, where one KB is 1000 bytes and which is how drive makers label capacity. That gap is exactly why a drive sold as 1TB shows as roughly 931GB in your file manager.
How to convert data sizes
Enter a value and its unit, choose the unit to convert to, and pick binary or decimal to match your situation.
Frequently asked questions
Which standard should I pick?
Use binary for RAM, file sizes and anything your operating system reports. Use decimal when matching a drive maker's advertised capacity or a network speed.