CSS Unit Calculator
Convert between CSS units including px, rem, em, pt, vw, and vh. Includes size preview and common font size reference.
Pixels
16px
REM
1rem
EM
1em
Points
12pt
Percent
100%
VW
0.8333vw
VH
1.4815vh
16px × 16px
Sample text at 16px
Note: REM is relative to root font size. EM is relative to parent font size. VW/VH are relative to viewport dimensions.
CSS Units - Détails techniques
REM is relative to root font size (usually 16px). EM is relative to parent element font size. VW and VH are percentages of viewport width and height respectively.
Alternative en ligne de commande
/* CSS unit examples */
html { font-size: 16px; }
.text { font-size: 1rem; } /* 16px */
.large { font-size: 1.5rem; } /* 24px */
.full-width { width: 100vw; }