How do you Convert inches of mercury to psia?

Answer 1

Air pressure can be expressed using different units of measure, such as atmospheres (atm), kilopascals (kPa), kilogram per square meter (kg/m2), millibars (mb), millimeters of Mercury (mmHg), and pounds-force per square inch (psi). The conversion to atm units depends on what units your original value are in.

To see how the different units compare, 1 atm is equal to:

760 torr

101.3 kPa (kilopascals)

0.1013 MPa (megapascals)

101325 Pa (pascals)

760 mmHg (millimeters of mercury)

29.92 inHg (inches of mercury)

1.013 bars

1013 mbar (millibars)

14.7 psi (pounds-force per square inch)

2116 lbf/ft^2 (pounds-force per square foot)

The standard measure of pressure (i.e the SI unit) is the pascal, but the kilopascal (kPa) is usually used for measuring atmospheric pressure. As such, here is the formula used to convert atm to kpa:

Pressure in atm = kPa value / (101.325 kPa/atm)

For example, to convert the pressure of 99.5 kPa into atm: = 99.5 kPa / (101.325 kPa)

= 0.98198865 atm

Answer 2

If you mean inches of mercury

1 atmosphere = 29.92 inches of mercury = 760 mm of mercury = 760 Torr = 101325 Pa = 1013.25 mb = 1013.25 hPa = 101.325 kPa.

So you just multiply by the one you want and divide by the one you have.

99.1 kPa * (29.92 inches Hg/101.325 kPa) = 29.26 inches.

Answer 3

if the units you're looking for are atmospheres (ATMs), divide your pressure by atmospheric pressure. In this case, that would be 406.8 inches of H20.

Answer 4

One inch of mercury is equal to 25.397 mm of mercury. There is no special conversion needed because what is being measured is the height of the mercury in the column.

Answer 5

PSIA = .491130 x inHg