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water column [centimeter] water column [inch] water column [millimeter] |
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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!

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

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

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

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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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