How to Use PX to REM Converter
Convert between px and rem/em for any root font size, with a reference table.
Open the PX to REM Converter tool →What is PX to REM Converter?
Convert between px and rem/em for any root font size, with a reference table. It's completely free, needs no sign-up, and runs entirely in your browser — so it's fast and private.
How to use PX to REM Converter
- Open the PX to REM Converter tool.
- Paste or type your input.
- Set any options provided.
- Copy the result. Everything runs in your browser — nothing is uploaded.
Frequently asked questions
Why use rem instead of px?
rem scales with the user's root font size, so your layout respects browser and accessibility settings — better for responsive, accessible design.
What root font size should I use?
16px is the browser default. Unless you've changed the root font-size, keep it at 16.
Ready to try it?
Open PX to REM Converter →