Instant · All Units · Free

CSS UnitConverter

Convert between px, rem, em, vw, vh, pt, and % instantly. Set your root font size, parent context, and viewport — get accurate results every time.

Convert
Quick:
16px =
rem
1
Relative to root font (16px)
em
1
Relative to parent font (16px)
vw
1.1111
% of viewport width (1440px)
vh
1.7778
% of viewport height (900px)
pt
12.0003
Points (1pt = 1.333px)
%
100
% of parent element (16px)
Context Settings
Root font size
html { font-size: Xpx }
px
Parent font size
Used for em and % calc
px
Viewport width
For vw conversion
px
Viewport height
For vh conversion
px
Presets