The word bar is of Greek origin, báros meaning weight. Its official symbol is "bar"; the earlier "b" is now deprecated, but still often seen especially as "mb" rather than the proper "mbar" for millibars.Metric conversions and more...
500 mmH2O to inch of mercury = 1.44795 inch of mercury 1000 mmH2O to inch of mercury = 2.8959 inch of mercury Want other units? You can do the reverse unit conversion frominch of mercury to mmH2O, or enter any two units below: ...
Conversion Tables Select a look up table for converting a pressure reading in millimetres of water column to other measurement units. mmHg» 1 to 10,000 mmH2O → 0.0735559 to 735.559 ftH2O Pa» 0.1 to 100 mmH2O → 0.980665 to 980.665 Pa ...
The word bar is of Greek origin, báros meaning weight. Its official symbol is "bar"; the earlier "b" is now deprecated, but still often seen especially as "mb" rather than the proper "mbar" for millibars.Metric conversions and more...
Aircraft operating at higher altitudes (above 18,000 feet) set their barometric altimeters to a standard pressure of 29.92 inHg or 1,013.2 hPa (1 hPa = 1 mbar) regardless of the actual sea level pressure, with inches of mercury used in the U.S. and Canada. The resulting altimeter readin...