How many psia in 1 mm Hg? The answer is 0.019336777496394. We assume you are converting between pound/square inch [absolute] and millimeter mercury [0 °C]. You can view more details on each measurement unit: psia or mm Hg The SI derived unit for pressure is the pascal. 1 pascal is equal to 0.00014503773800722 psia, 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 pounds/square inch and millimeters mercury. Type in your own numbers in the form to convert the units!
1 psia to mm Hg = 51.71493 mm Hg
2 psia to mm Hg = 103.42985 mm Hg
3 psia to mm Hg = 155.14478 mm Hg
4 psia to mm Hg = 206.8597 mm Hg
5 psia to mm Hg = 258.57463 mm Hg
6 psia to mm Hg = 310.28955 mm Hg
7 psia to mm Hg = 362.00448 mm Hg
8 psia to mm Hg = 413.7194 mm Hg
9 psia to mm Hg = 465.43433 mm Hg
10 psia to mm Hg = 517.14925 mm Hg
You can do the reverse unit conversion from mm Hg to psia, or enter any two units below:
Pounds per square inch absolute (psia) is used to make it clear that the pressure is relative to a vacuum rather than the ambient atmospheric pressure. Since atmospheric pressure at sea level is around 14.7 psi, this will be added to any pressure reading made in air at sea level.
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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