How many meter of head in 1 inches mercury? The answer is 0.34540400241015. We assume you are converting between meter of head and inch mercury [0 °C]. You can view more details on each measurement unit: meter of head or inches mercury The SI derived unit for pressure is the pascal. 1 pascal is equal to 0.00010199773339984 meter 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 meters of head and inches mercury. Type in your own numbers in the form to convert the units!
1 meter of head to inches mercury = 2.89516 inches mercury
5 meter of head to inches mercury = 14.4758 inches mercury
10 meter of head to inches mercury = 28.9516 inches mercury
15 meter of head to inches mercury = 43.42741 inches mercury
20 meter of head to inches mercury = 57.90321 inches mercury
25 meter of head to inches mercury = 72.37901 inches mercury
30 meter of head to inches mercury = 86.85481 inches mercury
40 meter of head to inches mercury = 115.80642 inches mercury
50 meter of head to inches mercury = 144.75802 inches mercury
You can do the reverse unit conversion from inches mercury to meter 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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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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