Convert inches of mercury to psi

Explanation

From this page you can convert inches of mercury to pounds per square inch (or inHg to psi) simply, by using the application above.

In case you are wondering, to convert from inches of mercury to pounds per square inch you need to multiply by 0.4912. This factor is calculated using the respective definitions of the two units you can find below.

Formula

1 inHg≈0.4912 psi

inches of mercuryinHg

dimension	pressure
symbol	inHg
synonyms	conventional

The conventional inch of mercury (inHg) is a unit of pressure.

Definition of the inch of mercury

The conventional inch of mercury is defined using the density of mercury at 0 °C, 13595.1 kg/m³ and the standard gravity.

Value in terms of the SI

One conventional inch of mercury is approximately 3386.389 pascals.

NIST Guide to the SI, Appendix B.9

Equivalences

One conventional inch of mercury is equivalent to:

Other mercury units

inch of mercury	inHg	1
foot of mercury	ftHg	12
inch of mercury at 32 °F	-
inch of mercury at 60 °F	-

Related Conversions

pounds per square inchpsi

dimension	pressure
symbol	psi, lbf/in²

The pound per square inch (psi, lbf/in²) or psi is a unit of pressure.

The "pound" in "pound per square inch" is the pound-force, not to be confused with the pound the unit of mass. One pound-force is the force exerted downward by a mass of one avoirdupoids pound on the surface of the Earth.

Definition of the pound per square inch

One psi is equal to the pressure exerted by a force of one pound-force on a surface of one square inch.

Equivalences

One psi is equivalent to:

Other psi units

pound per square inch	psi	1
kilopound per square inch	ksi	1000
megapound per square inch	Mpsi	1 000 000