Inches of mercury to Pounds per square inch converter

To convert inches of mercury to pounds per square inch, enter the value in the first field. The result in pounds per square inch is calculated automatically using the exact conversion factor.

1 inHg ≈ 0.49115414747 psi
1 psi ≈ 2.03602067732 inHg

Formula: psi ≈ inHg × 0.49115414747
inHg ≈ psi × 2.03602067732

Definitions: 1 inHg = 25.4 mmHg; 1 psi = 8896443230521/1290320000 Pa

The inch of mercury (inHg) is the pressure at the base of a one-inch column of mercury. It is used in the United States for barometric pressure in weather reports and for altimeter settings in aviation, where standard sea-level pressure is 29.92 inHg.

The pound per square inch (psi) is the customary United States unit of pressure, one pound-force per square inch. It is used for tire pressure, air compressors and water and gas pressure in the United States, and for tires in the United Kingdom too.

See the conversion table with commonly used values, handy for quick reference or study.