How many centihg in 1 in Hg? The answer is 2.5400002205181. We assume you are converting between centihg and inch mercury [0 °C]. You can view more details on each measurement unit: centihg or in Hg The SI derived unit for pressure is the pascal. 1 pascal is equal to 0.00075006156130264 centihg, or 0.00029529980164712 in Hg. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between centihg and inches mercury. Type in your own numbers in the form to convert the units!
1 centihg to in Hg = 0.3937 in Hg
5 centihg to in Hg = 1.9685 in Hg
10 centihg to in Hg = 3.93701 in Hg
20 centihg to in Hg = 7.87402 in Hg
30 centihg to in Hg = 11.81102 in Hg
40 centihg to in Hg = 15.74803 in Hg
50 centihg to in Hg = 19.68504 in Hg
75 centihg to in Hg = 29.52756 in Hg
100 centihg to in Hg = 39.37008 in Hg
You can do the reverse unit conversion from in Hg to centihg, or enter any two units below:
The SI prefix "centi" represents a factor of 10-2, or in exponential notation, 1E-2.
So 1 centihg = 10-2 hg.
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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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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