File Size Converter
Convert between bytes, kilobytes, megabytes and gigabytes using binary units.
Files & batch Client-side Plain arithmetic
Tool preview
How to use it
- 01
Enter a value.
- 02
Pick the source unit.
- 03
Read all four equivalents.
Limitations
- ! It uses 1024-based binary units, which differ from the decimal units used by drive manufacturers.
- ! It converts units, not files.
FAQ
Why does my 1 TB drive show about 931 GB?
Manufacturers use decimal units while operating systems report binary units.
What is the difference between KB and KiB?
KB is 1000 bytes in the strict SI sense, KiB is 1024; this tool uses the 1024 convention.
Can I convert file sizes of many files?
This page converts a single value.
Files never leave your device
Processing happens in your browser using the File API, WebAssembly and Web Workers. There is no upload endpoint.
Technical details
- Processing
- Client-side
- Implementation
- Plain arithmetic
- Category
- Files & batch
- Network requests
- None while processing