›› Convert centimeter water [4 °C] to


centimeter water
inch mercury


›› More information from the unit converter

How many centimeter water in 1 inch mercury? The answer is 34.531557667501.
We assume you are converting between centimeter water [4 °C] and .
You can view more details on each measurement unit:
centimeter water or inch mercury
The SI derived unit for pressure is the pascal.
1 pascal is equal to 0.010197162129779 centimeter water, 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 water and inches mercury.
Type in your own numbers in the form to convert the units!


›› Quick conversion chart of centimeter water to inch mercury

1 centimeter water to inch mercury = 0.02896 inch mercury

10 centimeter water to inch mercury = 0.28959 inch mercury

20 centimeter water to inch mercury = 0.57918 inch mercury

30 centimeter water to inch mercury = 0.86877 inch mercury

40 centimeter water to inch mercury = 1.15836 inch mercury

50 centimeter water to inch mercury = 1.44795 inch mercury

100 centimeter water to inch mercury = 2.8959 inch mercury

200 centimeter water to inch mercury = 5.7918 inch mercury



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

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›› Common pressure conversions

centimeter water to picopascal
centimeter water to zeptopascal
centimeter water to kip/square inch
centimeter water to megapascal
centimeter water to millimeter of water
centimeter water to gigapascal
centimeter water to meter of head
centimeter water to petabar
centimeter water to kilopond/square centimeter
centimeter water to kilonewton/square meter


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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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


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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!