Measurement unit conversion: millimeter mercury
Full name: Plural form: millimeters mercury
Symbol: mm Hg
Alternate spelling: mm mercury
Category type: pressure
Scale factor: 133.322387415
The SI derived unit for pressure is the pascal. 1 pascal is equal to 0.0075006157584566 millimeter mercury. Valid units must be of the pressure type. You can use this form to select from known units:
The millimeter of mercury by definition is 133.322387415 Pa (13.5951 g/cm3 × 9.80665 m/s2 × 1 mm), which is approximated with known accuracies of density of mercury and standard gravity.