Free PX to REM Converter
Convert between px and rem units.
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About the PX to REM Converter
Free PX to REM converter. Convert pixel values to rem and back based on your root font size — handy for responsive, accessible CSS.
How it works
- 1
Set the base
Enter your root font size.
- 2
Enter a value
In px or rem.
- 3
Get the result
See the converted value.
Frequently asked questions
The default root font size is 16px, but you can change it to match your project.
rem units scale with the user's font-size preference, improving accessibility.