How many inch of mercury in 1 centimeter of mercury?
The answer is 0.39370079197446.

We assume you are converting between **inch of mercury [0 °C]** and **centimeter of mercury [0 °C]**.

You can view more details on each measurement unit:

inch of mercury or
centimeter of mercury

The SI derived unit for **pressure** is the pascal.

1 pascal is equal to 0.00029529983071445 inch of mercury, or 0.00075006156130264 centimeter of 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 of mercury.

Type in your own numbers in the form to convert the units!

1 inch of mercury to centimeter of mercury = 2.54 centimeter of mercury

5 inch of mercury to centimeter of mercury = 12.7 centimeter of mercury

10 inch of mercury to centimeter of mercury = 25.4 centimeter of mercury

15 inch of mercury to centimeter of mercury = 38.1 centimeter of mercury

20 inch of mercury to centimeter of mercury = 50.8 centimeter of mercury

25 inch of mercury to centimeter of mercury = 63.5 centimeter of mercury

30 inch of mercury to centimeter of mercury = 76.2 centimeter of mercury

40 inch of mercury to centimeter of mercury = 101.6 centimeter of mercury

50 inch of mercury to centimeter of mercury = 127 centimeter of mercury

You can do the reverse unit conversion from centimeter of mercury to inch of mercury, or enter any two units below:

inch of mercury to inch of air

inch of mercury to centimeter of water

inch of mercury to kip/square foot

inch of mercury to millihg

inch of mercury to dekabar

inch of mercury to millimeter mercury

inch of mercury to millimeter water

inch of mercury to microbar

inch of mercury to decipascal

inch of mercury to barad

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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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