Convert CSS Units
Convert CSS units
Result
1rem
Context Settings
These values affect conversions involving relative units.
For rem calculations
For em calculations
For % calculations
For vw, vmin, vmax
For vh, vmin, vmax
Common Conversions
1rem = 16px (at 16px root)
1em = parent font size
1vw = 1% of viewport width
1vh = 1% of viewport height
1in = 96px = 72pt
1cm = 37.8px
About CSS Units Converter
Convert between CSS units including absolute units (px, pt, in, cm, mm) and relative units (rem, em, %, vw, vh). Relative unit conversions depend on context values like root font size and viewport dimensions.