Convert to foot of water [4 °C]

inch mercury
foot of water

More information from the unit converter

How many inch mercury in 1 foot of water? The answer is 0.88267086267998.
We assume you are converting between and foot of water [4 °C].
You can view more details on each measurement unit:
inch mercury or foot of water
The SI derived unit for pressure is the pascal.
1 pascal is equal to 0.00029529980164712 inch mercury, or 0.00033455256555148 foot of water.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between inches mercury and feet of water.
Type in your own numbers in the form to convert the units!

Quick conversion chart of inch mercury to foot of water

1 inch mercury to foot of water = 1.13293 foot of water

5 inch mercury to foot of water = 5.66463 foot of water

10 inch mercury to foot of water = 11.32925 foot of water

15 inch mercury to foot of water = 16.99388 foot of water

20 inch mercury to foot of water = 22.6585 foot of water

25 inch mercury to foot of water = 28.32313 foot of water

30 inch mercury to foot of water = 33.98775 foot of water

40 inch mercury to foot of water = 45.31701 foot of water

50 inch mercury to foot of water = 56.64626 foot of water

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

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Common pressure conversions

inch mercury to femtobar
inch mercury to centitorr
inch mercury to kilogram-force/square millimeter
inch mercury to technical atmosphere
inch mercury to exapascal
inch mercury to kilopascal
inch mercury to terapascal
inch mercury to gram/square centimeter
inch mercury to kilobar
inch mercury to millimeter of mercury

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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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

Metric conversions and more 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!