›› Convert centimeter of mercury [0 °C] to


centimeters of mercury
inch mercury


›› More information from the unit converter

How many centimeters of mercury in 1 inch mercury? The answer is 2.5400002205181.
We assume you are converting between centimeter of mercury [0 °C] and .
You can view more details on each measurement unit:
centimeters of mercury or inch mercury
The SI derived unit for pressure is the pascal.
1 pascal is equal to 0.00075006156130264 centimeters of mercury, 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 centimeters of mercury and inches mercury.
Type in your own numbers in the form to convert the units!


›› Quick conversion chart of centimeters of mercury to inch mercury

1 centimeters of mercury to inch mercury = 0.3937 inch mercury

5 centimeters of mercury to inch mercury = 1.9685 inch mercury

10 centimeters of mercury to inch mercury = 3.93701 inch mercury

20 centimeters of mercury to inch mercury = 7.87402 inch mercury

30 centimeters of mercury to inch mercury = 11.81102 inch mercury

40 centimeters of mercury to inch mercury = 15.74803 inch mercury

50 centimeters of mercury to inch mercury = 19.68504 inch mercury

75 centimeters of mercury to inch mercury = 29.52756 inch mercury

100 centimeters of mercury to inch mercury = 39.37008 inch mercury



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›› Common pressure conversions

centimeters of mercury to technical atmosphere
centimeters of mercury to kilopond/square millimeter
centimeters of mercury to gigapascal
centimeters of mercury to barye
centimeters of mercury to dekabar
centimeters of mercury to attobar
centimeters of mercury to nanopascal
centimeters of mercury to foot water
centimeters of mercury to sthene/square meter
centimeters of mercury to torr


›› Definition: Inch mercury

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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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.


›› Metric conversions and more

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, 100 kg, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!