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Data size converter
Convert bits, bytes, decimal storage units and binary KiB, MiB, GiB units.
Your result
A little input. A useful result.
Adjust the example inputs, then select Convert data size.
About this tool
Compare file and storage sizes without mixing decimal and binary units. Decimal kB, MB and GB use powers of 1,000; binary KiB, MiB and GiB use powers of 1,024.
How to use it
- 1
Enter a non-negative data size.
- 2
Select the original unit and desired unit, checking decimal versus binary labels.
- 3
Convert and see the equivalent number of bytes.
Questions, answered
Why is a GB different from a GiB?
One gigabyte is 1,000,000,000 bytes. One gibibyte is 1,073,741,824 bytes. The different bases explain many apparent size differences between storage labels and software displays.
What is the difference between b and B?
A lowercase b means bit and an uppercase B means byte. One byte contains eight bits. Fractional bytes can appear when converting a bit count that is not divisible by eight.