›› Convert inch of mercury [0 C] to centimeter water [4 C]

centimeter water

›› More information from the unit converter

How many inHg in 1 centimeter water? The answer is 0.028959020848759.
We assume you are converting between inch of mercury [0 C] and centimeter water [4 C].
You can view more details on each measurement unit:
inHg or centimeter water
The SI derived unit for pressure is the pascal.
1 pascal is equal to 0.00029529983071445 inHg, or 0.010197162129779 centimeter water.
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 water.
Type in your own numbers in the form to convert the units!

›› Quick conversion chart of inHg to centimeter water

1 inHg to centimeter water = 34.53155 centimeter water

2 inHg to centimeter water = 69.06311 centimeter water

3 inHg to centimeter water = 103.59466 centimeter water

4 inHg to centimeter water = 138.12622 centimeter water

5 inHg to centimeter water = 172.65777 centimeter water

6 inHg to centimeter water = 207.18933 centimeter water

7 inHg to centimeter water = 241.72088 centimeter water

8 inHg to centimeter water = 276.25243 centimeter water

9 inHg to centimeter water = 310.78399 centimeter water

10 inHg to centimeter water = 345.31554 centimeter water

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

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›› Common pressure conversions

inHg to micrometer of water
inHg to centimeter of water
inHg to millibar
inHg to foot of mercury
inHg to meganewton/square meter
inHg to kilogram/square centimeter
inHg to inch of water
inHg to kip/square foot
inHg to barye
inHg to pascal

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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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