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WWowFreeFonts

px ↔ rem ↔ em ↔ pt Converter

Convert between every CSS font-size unit against your root size.

Runs entirely in your browser — no upload, no registration.

rem
1.5000rem
em
1.5000em
pt
18.00pt
%
150.00%

What this tool does

Given a pixel value and a root font size (default 16px), returns rem, em, pt and %.

Why you might need it

Design systems in rems scale with user preferences and browser zoom; converting from Figma pixels keeps them consistent.

How to use it

  1. Set root size (usually 16).
  2. Enter a pixel value.
  3. Copy the unit you need.

Always review the included licence before commercial use. Do not remove copyright records, designer names, licensing metadata or embedding restrictions from any font you process.