CSS Unit Converter
Convert between different CSS units with live calculations. Pin your favorite units for quick access.
Convert From
Enter a value and select the unit to convert from
Default is 16px (browser default)
Generated Code
/* Original value */
font-size: 16px;
/* Common conversions */
/* 16.0000px */
/* 1.0000rem */
/* 1.0000em */All Conversions
Click the star icon to pin your favorite units to the top
px
Pixels
16.0000
rem
Rem
1.0000
em
Em
1.0000
%
Percent
100.0000
vw
Viewport Width
0.8333
vh
Viewport Height
1.4815
pt
Points
12.0000
cm
Centimeters
0.4233
mm
Millimeters
4.2328
in
Inches
0.1667
Unit Reference
Absolute Units
- px - Fixed size, 1/96th of an inch
- pt - Points, 1/72th of an inch
- cm, mm, in - Physical measurements
Relative Units
- rem - Relative to root font size
- em - Relative to parent font size
- % - Relative to parent element
- vw, vh - Relative to viewport