What this tool helps you find
Enter a quantity, choose decimal or binary units, and select the units to convert between. Decimal prefixes use powers of 1,000; binary prefixes use powers of 1,024.
Formula
Decimal units scale by 1,000; binary units scale by 1,024. One byte is 8 bits.
Worked example
1,000 MB is 1 GB in decimal units; 1,024 MiB is 1 GiB in binary units.
Common mistake
GB and GiB are not interchangeable: one GB is 1,000 MB, while one GiB is 1,024 MiB. Check which convention a device or service uses.
When to use it
Compare file sizes, storage capacity, and download sizes across common units.
Questions and answers
Why are GB and GiB different?
GB uses powers of 1,000 while GiB uses powers of 1,024.
How many bits are in a byte?
One byte contains eight bits.