›› Convert foot water [4 C] to


foot water
inch mercury

›› More information from the unit converter

How many foot water in 1 inch mercury? The answer is 1.1329251279053.
We assume you are converting between foot water [4 C] and .
You can view more details on each measurement unit:
foot water or inch mercury
The SI derived unit for pressure is the pascal.
1 pascal is equal to 0.00033455256555148 foot 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 feet water and inches mercury.
Type in your own numbers in the form to convert the units!


›› Quick conversion chart of foot water to inch mercury

1 foot water to inch mercury = 0.88267 inch mercury

5 foot water to inch mercury = 4.41335 inch mercury

10 foot water to inch mercury = 8.82671 inch mercury

20 foot water to inch mercury = 17.65342 inch mercury

30 foot water to inch mercury = 26.48013 inch mercury

40 foot water to inch mercury = 35.30683 inch mercury

50 foot water to inch mercury = 44.13354 inch mercury

75 foot water to inch mercury = 66.20031 inch mercury

100 foot water to inch mercury = 88.26709 inch mercury


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›› Common pressure conversions

foot water to pound/square inch
foot water to yottabar
foot water to decibar
foot water to centipascal
foot water to zettapascal
foot water to kilopond/square millimeter
foot water to centihg
foot water to pound/square foot
foot water to millimeter of water
foot water to decitorr


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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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