Millimeters of mercury conversion

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Millimeters of mercury


  • mm Hg

Unit of:

  • Pressure


1 mm of mercury is the pressure exerted by a 1 inch high column of mercury, now defined as 133.322387415m pascals

Common references:

  • Normal blood pressure for adults is below 140 mm Mercury (systolic) and below 90 mm Mercury (diastolic)

Usage context:

Has found widespread use in medicine (measuring bloody pressure, etc.) and meteorology