How many millimeter mercury [0 °C] in 1 Feet head? The answer is 22.414102813594. We assume you are converting between millimeter mercury [0 °C] and foot of head. You can view more details on each measurement unit: millimeter mercury [0 °C] or Feet head The SI derived unit for pressure is the pascal. 1 pascal is equal to 0.0075006157584566 millimeter mercury [0 °C], or 0.00033463823293911 Feet head. 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 head. Type in your own numbers in the form to convert the units!
1 millimeter mercury [0 °C] to Feet head = 0.04461 Feet head
10 millimeter mercury [0 °C] to Feet head = 0.44615 Feet head
20 millimeter mercury [0 °C] to Feet head = 0.8923 Feet head
30 millimeter mercury [0 °C] to Feet head = 1.33844 Feet head
40 millimeter mercury [0 °C] to Feet head = 1.78459 Feet head
50 millimeter mercury [0 °C] to Feet head = 2.23074 Feet head
100 millimeter mercury [0 °C] to Feet head = 4.46148 Feet head
200 millimeter mercury [0 °C] to Feet head = 8.92295 Feet head
You can do the reverse unit conversion from Feet head to millimeter mercury [0 °C], 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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