Px ↔ Rem Converter
Convert CSS pixels and rem units using your root font size.
Processing stays in your browser. rem is relative to the root font size. Browser preferences and stylesheet rules may change that size.
How to use the px ↔ rem converter
Convert CSS pixels and rem units using your root font size. Complete the value, root font size (px), conversion fields above. Choose Run tool, review the output and visual preview where available, then copy or download the result.
Example
24px with a 16px root font size equals 1.5rem.
Good to know
rem is relative to the root font size. Browser preferences and stylesheet rules may change that size.