Data size converter

Convert bytes, kilobytes, megabytes, gigabytes, terabytes and petabytes.

How it works

Tap a unit and type your value to see the others. Each step is 1,024 of the one below it, which is the way operating systems often count file sizes. Storage makers often use 1,000 instead.

Keep it on your iPhone

This tool is one of 20 in ConvCalc, alongside a scientific calculator with history. The app is free and has no ads.