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CSS Units Converter

Convert between CSS units in real time. Enter a value in any unit and see all conversions instantly. Click any result to copy.

Base font size: px Viewport width: px Viewport height: px

Value

Unit

Common Conversions Quick Reference

px	rem	em	pt	% (of 16px)

Reference table assumes base font size of 16px. rem and em values are relative to the base font size. Percentage is relative to the parent element's font size (16px default).