›› Convert to foot of water [4 °C]

millimeter mercury
foot of water

›› More information from the unit converter

How many millimeter mercury in 1 foot of water? The answer is 22.419842293221.
We assume you are converting between and foot of water [4 °C].
You can view more details on each measurement unit:
millimeter mercury or foot of water
The SI derived unit for pressure is the pascal.
1 pascal is equal to 0.0075006157584566 millimeter mercury, or 0.00033455256555148 foot of water.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between millimeters mercury and feet of water.
Type in your own numbers in the form to convert the units!

›› Quick conversion chart of millimeter mercury to foot of water

1 millimeter mercury to foot of water = 0.0446 foot of water

10 millimeter mercury to foot of water = 0.44603 foot of water

20 millimeter mercury to foot of water = 0.89207 foot of water

30 millimeter mercury to foot of water = 1.3381 foot of water

40 millimeter mercury to foot of water = 1.78413 foot of water

50 millimeter mercury to foot of water = 2.23017 foot of water

100 millimeter mercury to foot of water = 4.46033 foot of water

200 millimeter mercury to foot of water = 8.92067 foot of water

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You can do the reverse unit conversion from foot of water to millimeter mercury, or enter any two units below:

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›› Common pressure conversions

millimeter mercury to megabar
millimeter mercury to exapascal
millimeter mercury to centibar
millimeter mercury to kilobar
millimeter mercury to pieze
millimeter mercury to pound/square inch
millimeter mercury to kip/square inch
millimeter mercury to micron of mercury
millimeter mercury to barye
millimeter mercury to yoctopascal

›› Definition: Millimeter mercury

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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