CSS Unit Converter
Convert between px, rem, em, vw, vh, and % units.
This tool runs entirely in your browser. No data is sent to any server.
px
px
px
px
rem
1remem
1emvw
0.8333vwvh
1.4815vh%
0.8333%Quick Reference (base: 16px)
px
rem
em
8px
0.5rem
0.5em
10px
0.625rem
0.625em
12px
0.75rem
0.75em
14px
0.875rem
0.875em
16px
1rem
1em
18px
1.125rem
1.125em
20px
1.25rem
1.25em
24px
1.5rem
1.5em
32px
2rem
2em
48px
3rem
3em
64px
4rem
4em
Unit Definitions
- px — Absolute pixel unit
- rem — Relative to root element font size
- em — Relative to parent element font size
- vw — 1% of viewport width
- vh — 1% of viewport height
- % — Relative to parent element size