How many inch of mercury in 1 foot of mercury?
The answer is 12.

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

You can view more details on each measurement unit:

inch of mercury or
foot of mercury

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

1 pascal is equal to 0.00029529983071445 inch of mercury, or 2.4608319226204E-5 foot of mercury.

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

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

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

1 inch of mercury to foot of mercury = 0.08333 foot of mercury

10 inch of mercury to foot of mercury = 0.83333 foot of mercury

20 inch of mercury to foot of mercury = 1.66667 foot of mercury

30 inch of mercury to foot of mercury = 2.5 foot of mercury

40 inch of mercury to foot of mercury = 3.33333 foot of mercury

50 inch of mercury to foot of mercury = 4.16667 foot of mercury

100 inch of mercury to foot of mercury = 8.33333 foot of mercury

200 inch of mercury to foot of mercury = 16.66667 foot of mercury

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

inch of mercury to ton/square inch

inch of mercury to kip/square foot

inch of mercury to zeptobar

inch of mercury to petapascal

inch of mercury to dekapascal

inch of mercury to millimeter of mercury

inch of mercury to meter of head

inch of mercury to terabar

inch of mercury to micron mercury

inch of mercury to inch of water

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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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