How many inch of water in 1 mm Hg? The answer is 0.53524016106163. We assume you are converting between inch of water [4 °C] and millimeter mercury [0 °C]. You can view more details on each measurement unit: inch of water or mm Hg The SI derived unit for pressure is the pascal. 1 pascal is equal to 0.0040146307866177 inch of water, or 0.0075006157584566 mm Hg. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between inches of water and millimeters mercury. Type in your own numbers in the form to convert the units!
1 inch of water to mm Hg = 1.86832 mm Hg
5 inch of water to mm Hg = 9.3416 mm Hg
10 inch of water to mm Hg = 18.6832 mm Hg
15 inch of water to mm Hg = 28.0248 mm Hg
20 inch of water to mm Hg = 37.3664 mm Hg
25 inch of water to mm Hg = 46.708 mm Hg
30 inch of water to mm Hg = 56.04961 mm Hg
40 inch of water to mm Hg = 74.73281 mm Hg
50 inch of water to mm Hg = 93.41601 mm Hg
You can do the reverse unit conversion from mm Hg to inch of water, or enter any two units below:
The millimeter of mercury by definition is 133.322387415 Pa (13.5951 g/cm3 × 9.80665 m/s2 × 1 mm), which is approximated with known accuracies of density of mercury and standard gravity.
The torr is defined as 1/760 of one standard atmosphere, while the atmosphere is defined as 101325 pascals. Therefore, 1 Torr is equal to
101325/760 Pa. The decimal form of this fraction is approximately 133.322368421.
The relationship between the torr and the millimeter of mercury is:
1 Torr = 0.999999857533699 mmHg
1 mmHg = 1.000000142466321 Torr
The difference between one millimeter of mercury and one torr, as well as between one atmosphere (101.325 kPa) and 760 mmHg (101.3250144354 kPa), is less than one part in seven million (or less than 0.000015%). This small difference is negligible for most applications outside metrology.
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