CSS Unit Converter

Convert between CSS units for responsive design

Value

From Unit

To Unit

Base Font Size (px)

Used for em/rem conversions

Viewport Width (px)

Viewport Height (px)

Result

1em

CSS Example

font-size: 1em;

Quick Reference

Absolute Units

1px = 1/96 inch
1pt = 1/72 inch
1pc = 12pt

Relative Units

1em = parent font size
1rem = root font size
1vw = 1% of viewport width
1vh = 1% of viewport height