Data Storage Converter
Convert bytes, kilobytes, mebibytes and more, correctly.
Input
This tool runs entirely in your browser. The data you paste or load is never uploaded.
Result
Enter your input, then run the tool.
About this tool
Converts between decimal units (kB, MB, GB) and binary units (KiB, MiB, GiB) and explains the difference. This is why a 1 TB drive shows as 931 GiB in some operating systems.
How to use it
- Enter the value and choose the source unit.
- Read the table showing every unit.
- Use the decimal or binary column depending on what your system reports.
Frequently asked questions
Why is my 1 TB drive only 931 GB?
Drive makers use decimal units (10^12 bytes) while many systems report binary units (2^40 bytes = 931 GiB).
Which unit should I use in documentation?
Use kB/MB/GB for decimal and KiB/MiB/GiB for binary, as defined by IEC 80000-13.
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