MM to REM Converter | CSS Unit Calculator (Online)
Convert Millimeters (mm) to REM.
About MM to REM Converter | CSS Unit Calculator (Online)
The MM to REM converter converts physical millimeter lengths into relative REM units. It first converts MM to PX using the DPI, then PX to REM using the root font size.
Formula for MM to REM Converter | CSS Unit Calculator (Online)
REM = ((MM × DPI) ÷ 25.4) ÷ Root Font Size
Examples
10mm at 96 DPI / 16px base
=
2.36rem
Reference
- • 25.4 mm = 1 inch
- • 1 rem = root font size (default 16px)