How many inHg in 1 centimeter mercury?
The answer is 0.39370079197446.
We assume you are converting between inch of mercury [0 °C] and centimeter mercury [0 °C].
You can view more details on each measurement unit:
inHg or centimeter mercury
The SI derived unit for pressure is the pascal.
1 pascal is equal to 0.00029529983071445 inHg, or 0.00075006156130264 centimeter 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 centimeters mercury.
Type in your own numbers in the form to convert the units!
1 inHg to centimeter mercury = 2.54 centimeter mercury
5 inHg to centimeter mercury = 12.7 centimeter mercury
10 inHg to centimeter mercury = 25.4 centimeter mercury
15 inHg to centimeter mercury = 38.1 centimeter mercury
20 inHg to centimeter mercury = 50.8 centimeter mercury
25 inHg to centimeter mercury = 63.5 centimeter mercury
30 inHg to centimeter mercury = 76.2 centimeter mercury
40 inHg to centimeter mercury = 101.6 centimeter mercury
50 inHg to centimeter mercury = 127 centimeter mercury
You can do the reverse unit conversion from centimeter mercury to inHg, or enter any two units below:
inHg to inch mercury
inHg to terapascal
inHg to centihg
inHg to torr
inHg to technical atmosphere
inHg to kilopond/square centimeter
inHg to atmosphere
inHg to yottabar
inHg to microbar
inHg to decibar
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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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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