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


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inch of mercury

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How many water column in 1 inch of mercury? The answer is 34.531554268447.
We assume you are converting between water column [centimeter] and inch of mercury [0 C].
You can view more details on each measurement unit:
water column or inch of mercury
The SI derived unit for pressure is the pascal.
1 pascal is equal to 0.010197162129779 water column, 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 water column and inches of mercury.
Type in your own numbers in the form to convert the units!


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

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

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

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

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

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

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

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

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


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›› Common pressure conversions

water column to yottabar
water column to nanobar
water column to exapascal
water column to millihg
water column to yottapascal
water column to newton/square meter
water column to kilonewton/square meter
water column to petabar
water column to kip/square foot
water column to meter of air


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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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