How many foot of head in 1 inches mercury? The answer is 1.1332152310044. We assume you are converting between foot of head and inch mercury [0 °C]. You can view more details on each measurement unit: foot of head or inches mercury The SI derived unit for pressure is the pascal. 1 pascal is equal to 0.00033463823293911 foot of head, or 0.00029529980164712 inches mercury. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between feet of head and inches mercury. Type in your own numbers in the form to convert the units!
1 foot of head to inches mercury = 0.88244 inches mercury
5 foot of head to inches mercury = 4.41222 inches mercury
10 foot of head to inches mercury = 8.82445 inches mercury
20 foot of head to inches mercury = 17.6489 inches mercury
30 foot of head to inches mercury = 26.47335 inches mercury
40 foot of head to inches mercury = 35.2978 inches mercury
50 foot of head to inches mercury = 44.12224 inches mercury
75 foot of head to inches mercury = 66.18337 inches mercury
100 foot of head to inches mercury = 88.24449 inches mercury
You can do the reverse unit conversion from inches mercury to foot of head, or enter any two units below:
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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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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