How many centimeter water in 1 inch of mercury?
The answer is 34.531554268447.

We assume you are converting between **centimeter water [4 °C]** and **inch of mercury [0 °C]**.

You can view more details on each measurement unit:

centimeter water or
inch of mercury

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

1 pascal is equal to 0.010197162129779 centimeter water, or 0.00029529983071445 inch of mercury.

Note that rounding errors may occur, so always check the results.

Use this page to learn how to convert between centimeters water and inches of mercury.

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

1 centimeter water to inch of mercury = 0.02896 inch of mercury

10 centimeter water to inch of mercury = 0.28959 inch of mercury

20 centimeter water to inch of mercury = 0.57918 inch of mercury

30 centimeter water to inch of mercury = 0.86877 inch of mercury

40 centimeter water to inch of mercury = 1.15836 inch of mercury

50 centimeter water to inch of mercury = 1.44795 inch of mercury

100 centimeter water to inch of mercury = 2.8959 inch of mercury

200 centimeter water to inch of mercury = 5.7918 inch of mercury

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

centimeter water to kilogram-force/square millimeter

centimeter water to inch mercury

centimeter water to atmosphere

centimeter water to pieze

centimeter water to millitorr

centimeter water to millimeter of mercury

centimeter water to attopascal

centimeter water to pound/square foot

centimeter water to femtopascal

centimeter water to ton/square meter

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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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