What is the most common unit of air pressure?

Answer 1

Pound per Square Inch, or psiPSI, or pounds per square inch is commonly use. The correct way to write it is lb./in2, or pounds by square inch. Atmospheres, or ATMAnother common unit of pressure is an atmosphere, or ATM. As the name implies, it is commonly used to measure atmospheric pressure. It is also used to measure the pressure of gases in a container. Standard air pressure at sea level is 1 atmosphere, or 1 ATM.

In different all the different units of pressure this is equivalent to:

1 ATM = 14.6959488 pounds per square inch

1 ATM = 29.9246899 inches of Mercury

1 ATM = 760 mm mercury

1 ATM = 760 torr

1 ATM = 101 325 pascals

1 ATM = 1.01325 bar

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Only the pascal is a unit in the metric system.

1 Pa = 1 N/m2.

Answer 2

The most common units are atmosphere (atm) , mm col. Hg, etc.

But the official unit in SI for pressure is the pascal (Pa).

Answer 3

The most common unit of air pressure is the "pounds per square inch" (psi), especially in the United States. In the metric system, the "hectopascal" (hPa) is commonly used to measure air pressure.