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CSS Unit Converter

Free CSS unit converter. Convert between px, rem, and em using a root font size.

Root font size (px)

Context font size (px) for em

Value

From

About this tool

CSS Unit Converter is a free online utility on QuikUtil. Free CSS unit converter. Convert between px, rem, and em using a root font size.

Default root?

16px root font size (common browser default).

em vs rem?

rem is root-relative; em is relative to parent/context size you enter.

Local?

Yes.

vh/vw?

Not in this simple converter.