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


inch of mercury
centimeter of water

›› More information from the unit converter

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


›› Quick conversion chart of inch of mercury to centimeter of water

1 inch of mercury to centimeter of water = 34.53155 centimeter of water

2 inch of mercury to centimeter of water = 69.06311 centimeter of water

3 inch of mercury to centimeter of water = 103.59466 centimeter of water

4 inch of mercury to centimeter of water = 138.12622 centimeter of water

5 inch of mercury to centimeter of water = 172.65777 centimeter of water

6 inch of mercury to centimeter of water = 207.18933 centimeter of water

7 inch of mercury to centimeter of water = 241.72088 centimeter of water

8 inch of mercury to centimeter of water = 276.25243 centimeter of water

9 inch of mercury to centimeter of water = 310.78399 centimeter of water

10 inch of mercury to centimeter of water = 345.31554 centimeter of water


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

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›› Common pressure conversions

inch of mercury to megabar
inch of mercury to centitorr
inch of mercury to pound/square inch
inch of mercury to foot of water
inch of mercury to atmosphere
inch of mercury to kilopascal
inch of mercury to dyne/square centimeter
inch of mercury to zeptopascal
inch of mercury to meter of head
inch of mercury to millihg


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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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