## Convert to foot water [4 °C]

 millimeter mercury foot water

How many millimeter mercury in 1 foot water? The answer is 22.419842293221.
We assume you are converting between and foot water [4 °C].
You can view more details on each measurement unit:
millimeter mercury or foot water
The SI derived unit for pressure is the pascal.
1 pascal is equal to 0.0075006157584566 millimeter mercury, or 0.00033455256555148 foot 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 water.
Type in your own numbers in the form to convert the units!

## Quick conversion chart of millimeter mercury to foot water

1 millimeter mercury to foot water = 0.0446 foot water

10 millimeter mercury to foot water = 0.44603 foot water

20 millimeter mercury to foot water = 0.89207 foot water

30 millimeter mercury to foot water = 1.3381 foot water

40 millimeter mercury to foot water = 1.78413 foot water

50 millimeter mercury to foot water = 2.23017 foot water

100 millimeter mercury to foot water = 4.46033 foot water

200 millimeter mercury to foot water = 8.92067 foot water

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

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## 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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