Full name: millimeter of water [4 °C]
Plural form: millimeters of water
Symbol: mmH2O
Alternate spelling: mm of water
Category type: pressure
Scale factor: 9.80665
The SI derived unit for pressure is the pascal.
1 pascal is equal to 0.10197162129779 mmH2O.
Valid units must be of the pressure type.
You can use this form to select from known units: