PX to REM Converter
Convert pixels to rem and rem to pixels using any root font size, with a table of common sizes for quick reference.
Free · No upload · 100% on your device
How to use PX to REM Converter
- Choose the settings in the side panel.
- The result updates instantly. Select “Convert” for a fresh one.
- Copy the result or download it.
Private by design. Everything you type, open or record is processed in this browser tab and is never uploaded to KittySuite.
About PX to REM Converter
rem is relative to the root font size, which is 16 px unless the site changes it. Using rem for text respects people who make their browser’s default text larger.
Everything is calculated in this browser tab and nothing you enter is sent anywhere. It keeps working offline once the page has loaded.
PX to REM Converter: frequently asked questions
How do I convert px to rem?
Enter the pixel value. With the default 16 px root size, 24 px is 1.5 rem.
What if my site uses a different root font size?
Enter it and every conversion uses that size.
Why use rem instead of px?
rem respects people who make their browser’s default text larger, so text scales with their setting.
Is there a quick reference?
Yes. A table lists common sizes in both units.