PX to REM Converter

What is PX to REM Converter

The PX ↔ REM converter turns pixels into rem and back, based on the root font-size you set. It is handy for writing scalable, accessible CSS, where rem sizes adapt to the user's preferences.

The calculation is instant and happens in the browser.

How it works

1. Set the base font-size (usually 16px).
2. Type a value in px to see the rem, or in rem to see the px.
3. Both conversions update in real time.
4. Use the values in your CSS.

Frequently Asked Questions