›› Measurement unit: millimeter of mercury

Full name: millimeter of mercury [0 C]

Plural form: millimeters of mercury

Symbol: mmHg

Alternate spelling: mm of mercury

Category type: pressure

Scale factor: 133.32239


›› SI unit: pascal

The SI derived unit for pressure is the pascal.
1 pascal is equal to 0.0075006156130264 millimeter of mercury.


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›› Definition: Millimeter of mercury

The torr (symbol: Torr) or millimetre of mercury (mmHg) is a non-SI unit of pressure. It is the atmospheric pressure that supports a column of mercury 1 millimetre high. The unit is named after Evangelista Torricelli, Italian physicist and mathematician, for his discovery of the principle of the barometer in 1643.


›› Sample conversions: millimeter of mercury

millimeter of mercury to foot of air [0 C]
millimeter of mercury to centimeter of mercury [0 C]
millimeter of mercury to water column [centimeter]
millimeter of mercury to attopascal
millimeter of mercury to kip/square inch
millimeter of mercury to sthene/square metre
millimeter of mercury to barad
millimeter of mercury to technical atmosphere
millimeter of mercury to barye
millimeter of mercury to meter of head