How many pounds per square inch are in 1 inch of mercury?

1 inch of mercury equals 0.491154 psi.

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

Use the reverse converter: 1 pound per square inch equals 2.03602 inHg.

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

To convert inches of mercury to pounds per square inch, multiply the value by 0.4911542.

psi = inHg × 0.4911542

120 inHg × 0.4911542 = 58.94 psi

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

How do I convert inches of mercury to pounds per square inch?: To convert inches of mercury to pounds per square inch, multiply the value by 0.4911542.
How many pounds per square inch are in 1 inch of mercury?: 1 inch of mercury equals 0.491154 psi.
How many pounds per square inch are in 10 inches of mercury?: 10 inHg equals 4.91154 psi.
How do I convert pounds per square inch back to inches of mercury?: Use the reverse converter: 1 pound per square inch equals 2.03602 inHg.
Is this converter accurate?: Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.