In css properties, there are several units of measurement that are commonly used, starting from: PX, EM, REM, PT, CM, and others.
PX to CM
CM to PX
PX to EM
EM to PX
PX to Inch
Inch to PX
PX to MM
MM to PX
PX to PT
PT to PX
PX to REM
REM to PX