How many ft of head in 1 inch 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: ft of head or inch mercury The SI derived unit for pressure is the pascal. 1 pascal is equal to 0.00033463823293911 ft of head, or 0.00029529980164712 inch 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 ft of head to inch mercury = 0.88244 inch mercury
5 ft of head to inch mercury = 4.41222 inch mercury
10 ft of head to inch mercury = 8.82445 inch mercury
20 ft of head to inch mercury = 17.6489 inch mercury
30 ft of head to inch mercury = 26.47335 inch mercury
40 ft of head to inch mercury = 35.2978 inch mercury
50 ft of head to inch mercury = 44.12224 inch mercury
75 ft of head to inch mercury = 66.18337 inch mercury
100 ft of head to inch mercury = 88.24449 inch mercury
You can do the reverse unit conversion from inch mercury to ft 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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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.
ConvertUnits.com provides an online conversion calculator for all types of measurement units. You can find metric conversion tables for SI units, as well as English units, currency, and other data. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. Examples include mm, inch, 70 kg, 150 lbs, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!