File Size Converter

Convert between B, KB, MB, GB (decimal and binary).

Frequently asked questions

What does the File Size Converter do?

Convert between B, KB, MB, GB (decimal and binary). Enter your values and get an instant estimate in your browser — free, with no signup.

Is the File Size Converter free to use?

Yes. OpenCalcy calculators are free to use, work on mobile, and keep favorites privately in your browser.