REM to PX Converter
Converts REM units into pixels based on a base font size.
Lilu Baba's REM to PX Converter converts CSS REM units into pixels using your chosen root font size — handy for translating design specs into code.
How to use this calculator
- Enter the REM value.
- Enter the root font size (default browser value is 16px).
- The pixel equivalent updates instantly.
Pixels
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FAQ
REM to PX Converter — frequently asked questions
A relative unit equal to the root (html) element's font size — 1rem typically equals 16px unless changed.
Some sites set a custom root font size (e.g. for accessibility or responsive scaling) — use that value here for an accurate conversion.