Web & Developer
PX to REM Converter
Convert pixels to REM units instantly for responsive web design and CSS development.
Live Conversion
Conversion Mode
Two-Way Sync
Root Settings
px
Standard browser default is 16px. Change this if your project uses a different root size (e.g., 10px / 62.5%).
REM (Root EM) is a relative unit. It calculates its size based on the font-size of the root <html> element.
CSS Output & Reference
CSS Snippet
font-size: 1.5rem;
Quick Reference (Base: 16px)
12px
0.75 rem
14px
0.875 rem
18px
1.125 rem
24px
1.5 rem