PX to REM Converter
Convert pixels to rem/em and back with any base font size, plus a ready-made conversion table for your CSS.
- Free
- No sign-up
- Runs in your browser
- Web & Developer
About the PX to REM Converter
Type a pixel or rem value to convert instantly. Change the root font size if your site does not use 16px.
How it works
rem = px ÷ root font size. The default browser root size is 16px.
Frequently asked questions
Why use rem instead of px?
rem scales with the user’s browser font-size setting, which improves accessibility.