How many inches of mercury are in 1 pound per square inch?

1 pound per square inch equals 2.03602 inHg.

How do I convert inches of mercury back to pounds per square inch?

Use the reverse converter: 1 inch of mercury equals 0.491154 psi.

Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.

To convert pounds per square inch to inches of mercury, multiply the value by 2.03602046.

inHg = psi × 2.03602046

40 psi × 2.03602046 = 81.44 inHg

Pound Per Square Inch (psi): Used for tyre and industrial pressure in the US. About 6,894.757 pascals.
Inch Of Mercury (inHg): Used for barometric pressure in US weather and aviation. About 3,386.389 pascals.

How do I convert pounds per square inch to inches of mercury?: To convert pounds per square inch to inches of mercury, multiply the value by 2.03602046.
How many inches of mercury are in 1 pound per square inch?: 1 pound per square inch equals 2.03602 inHg.
How many inches of mercury are in 10 pounds per square inch?: 10 psi equals 20.3602 inHg.
How do I convert inches of mercury back to pounds per square inch?: Use the reverse converter: 1 inch of mercury equals 0.491154 psi.
Is this converter accurate?: Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.