›› Measurement unit: mmHg

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 0.00750061561303 mmHg.


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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: mmHg

mmHg to millitorr
mmHg to millimeter water [4 C]
mmHg to foot of water [4 C]
mmHg to femtobar
mmHg to yoctopascal
mmHg to pound/square inch [absolute]
mmHg to kilobar
mmHg to kip/square foot
mmHg to kilogram/square centimetre
mmHg to foot water [4 C]