PX to REM
PX to EM
PX to PT
PX to %
Typically 16px in most browsers by default
Font size of the parent element
Conversion History
About Unit Conversion
This tool helps you convert between absolute (px, pt) and relative (rem, em, %) CSS units for responsive web design.
CSS Units Explained
- px (pixels): Absolute unit (1px = 1/96th of 1in)
- rem (root em): Relative to root element's font size
- em: Relative to parent element's font size
- %: Percentage of parent element's font size
- pt (points): Absolute unit (1pt = 1/72 of 1in)
Conversion Formulas
- px to rem: rem = px / root font size (usually 16px)
- px to em: em = px / parent font size
- px to %: % = (px / parent font size) * 100
- px to pt: pt = px * 0.75