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How many inch of mercury in 1 pounds per square inch?
The answer is 2.0360206576.

We assume you are converting between **inch of mercury [0 °C]** and **pound/square inch**.

You can view more details on each measurement unit:

inch of mercury or
pounds per square inch

The SI derived unit for **pressure** is the pascal.

1 pascal is equal to 0.000295299830714 inch of mercury, or 0.000145037738007 pounds per square inch.

Note that rounding errors may occur, so always check the results.

Use this page to learn how to convert between inches of mercury and pounds/square inch.

Type in your own numbers in the form to convert the units!

Inches of mercury or inHg is a non-SI unit for pressure. It is still widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.

It is defined as the pressure exerted by a column of mercury of 1 inch in height at 32 °F (0 °C) at the standard acceleration of gravity.

1 inHg = 3,386.389 pascals at 0 °C.

Aircraft operating at higher altitudes (above 18,000 feet) set their barometric altimeters to a standard pressure of 29.92 inHg or 1,013.2 hPa (1 hPa = 1 mbar) regardless of the actual sea level pressure, with inches of mercury used in the U.S. and Canada. The resulting altimeter readings are known as flight levels.

Piston engine aircraft with constant-speed propellers also use inHg to measure manifold pressure, which is indicative of engine power produced.

The pound per square inch or, more accurately, pound-force per square inch (symbol: psi or lbf/in² or lbf/in²) is a unit of pressure or of stress based on avoirdupois units. It is the pressure resulting from a force of one pound-force applied to an area of one square inch.

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