File Size Converter
Enter a value and choose the units to instantly convert a file size between bytes, KB, MB, GB and TB.
| Unit | Value |
|---|---|
| B | 1048576 |
| KB | 1024 |
| GB | 0.000977 |
| TB | 0.000001 |
Your files are processed locally in your browser. They are not uploaded to our servers.
How to use
- Enter a value.
- Choose the unit you're converting from.
- Read the converted result for every other unit at once, in a single table.
What is this tool?
File Size Converter translates a storage size between bytes, kilobytes, megabytes, gigabytes and terabytes using the standard 1024-based (binary) convention, the same one used by most operating systems when reporting file and drive sizes. The conversion happens instantly as you type.
Common uses
- Checking how many MB a file size in GB actually is
- Comparing storage plan sizes across different units
- Estimating download time based on file size and connection speed
- Converting a specification sheet's storage figures to a familiar unit
Related tools
FAQ
Does this use 1000 or 1024 for each unit step?
It uses 1024, the binary convention most operating systems use when displaying file and drive sizes (1 KB = 1024 bytes).
Can I convert a very large number like petabytes?
The tool covers bytes through terabytes, which covers the vast majority of everyday file size conversions.
Is this the same as what my computer shows?
It matches how Windows, macOS and most tools calculate file sizes using binary (1024-based) units.