Did you mean to convert |
inch mercury | to |
inch of air [0 °C] inch of air [15 °C] |

How many inch mercury in 1 inch of air?
The answer is 9.5088721348906E-5.

We assume you are converting between and **inch of air [0 °C]**.

You can view more details on each measurement unit:

inch mercury or
inch of air

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

1 pascal is equal to 0.00029529980164712 inch mercury, or 3.1055186930487 inch of air.

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

Use this page to learn how to convert between inches mercury and inches of air.

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

1 inch mercury to inch of air = 10516.49434 inch of air

2 inch mercury to inch of air = 21032.98868 inch of air

3 inch mercury to inch of air = 31549.48302 inch of air

4 inch mercury to inch of air = 42065.97737 inch of air

5 inch mercury to inch of air = 52582.47171 inch of air

6 inch mercury to inch of air = 63098.96605 inch of air

7 inch mercury to inch of air = 73615.46039 inch of air

8 inch mercury to inch of air = 84131.95473 inch of air

9 inch mercury to inch of air = 94648.44907 inch of air

10 inch mercury to inch of air = 105164.94341 inch of air

You can do the reverse unit conversion from inch of air to inch mercury, or enter any two units below:

inch mercury to kilonewton/square meter

inch mercury to foot water

inch mercury to exabar

inch mercury to gigapascal

inch mercury to ounce/square inch

inch mercury to centitorr

inch mercury to kilogram-force/square meter

inch mercury to sthene/square meter

inch mercury to nanopascal

inch mercury to nanobar

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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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.

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