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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
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.
To convert inches of mercury (inHg) to pounds per square inch absolute (psia), divide the value in inHg by 2.036. This conversion factor accounts for the density of mercury compared to air.
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.
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.
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A barometer registers a reading of 12.6 psi what is the equivalent pressure in inches of mercury?
To convert psi to inches of mercury, multiply the psi value by 2.036. Therefore, 12.6 psi is equivalent to approximately 25.65 inches of mercury.
A pressure gauge reads57 psi The equivalent pressure in inches of mercury absolute is?
To convert psi to inches of mercury absolute, divide the psi value by 2.036. In this case, 57 psi divided by 2.036 is approximately 27.97 inches of mercury absolute.
How do you convert bar to psa?
To convert bar to psia (pounds per square inch absolute), you need to add the atmospheric pressure in psia to the pressure in bar. 1 bar is approximately equal to 14.5038 psia (standard atmospheric pressure at sea level).
How do you go from inches of Mercury to ATM?
To convert inches of Mercury to ATM (atmospheres), you can use the conversion factor: 1 atm = 29.92 inHg. Simply divide the measurement in inches of Mercury by 29.92 to obtain the equivalent value in atmospheres.
How do you convert psig tp psia?
PSIG refers to pound/force per square inch gauge, while PSI measures the pressure relative to a vacuum. If you want to convert a figure from PSIG to PSI, you would need to add 14.7psi to your PSIG figure, which will give you your PSIA result.
How do you convert kilopascals to inches of Mercury?
kPa x 0.2953 = inches of mercury
How do you convert inches Mercury to ATM?
Multiply inches of mercury by 0.033421057 to get atmospheres.
How do you convert psi to inches of Mercury?
Inches of mercury x 0.4912 = psi
How do you measure psi with inches of Mercury?
You can convert inches of Mercury (inHg) to pounds per square inch (psi) by dividing the inHg value by 2.036. This conversion is based on the relationship between pressure in units of inches of Mercury and pounds per square inch.
How do you convert inches of Mercury to pascals?
To convert inches of Mercury to pascals, use the conversion factor 1 inHg = 3386.39 Pa. Multiply the value in inches of Mercury by this conversion factor to get the equivalent value in pascals.
How do you convert 15 psia to psig?
psia to psig psig - 15 15 - 15= 0 psig
How do you convert inches of Mercury to millibars?
One inch of mercury is equal to 33.9 millibars. So: inches of mercury x 33.9 = millibars.
How much psia does 10 in. Hg equal?
14.7psia = about 30inhg thus, let 14.7 be 15 for easier calculations if 15 psia = 30 inhg then 1 psia = 30/15 inhg therefore 1 psia = 2 inhg or 1 inhg = 0.5 psia so 10 inhg is about 5 psia hope this helps
How many millbars are equal to 27.23 inches of mercury?
To convert inches of mercury to millibars, multiply by 33.863886. Therefore, 27.23 inches of mercury is equal to approximately 731.91 millibars.
A barometer registers a reading of 12.6 psi what is the equivalent pressure in inches of mercury?
To convert psi to inches of mercury, multiply the psi value by 2.036. Therefore, 12.6 psi is equivalent to approximately 25.65 inches of mercury.
How is psig changed to psia?
add atmosperic pressure to gage pressure to convert to psia one atm standard = 14.7 psi
How many inches water equal 29.92 inches mercury?
To convert inches of mercury to inches of water, you can use the conversion factor of 1 inch of mercury = 13.6 inches of water. Therefore, 29.92 inches of mercury is equal to 29.92 x 13.6 = 407.552 inches of water.
