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


micrometer of water
inch of mercury

›› More information from the unit converter

How many micrometer of water in 1 inch of mercury? The answer is 345315.54268447.
We assume you are converting between micrometer of water [4 C] and inch of mercury [0 C].
You can view more details on each measurement unit:
micrometer of water or inch of mercury
The SI derived unit for pressure is the pascal.
1 pascal is equal to 101.97162129779 micrometer of water, 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 micrometers of water and inches of mercury.
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›› Common pressure conversions

micrometer of water to hectopascal
micrometer of water to technical atmosphere
micrometer of water to pieze
micrometer of water to sthene/square meter
micrometer of water to megapascal
micrometer of water to poundal/square foot
micrometer of water to kilobar
micrometer of water to millimeter mercury
micrometer of water to kilopond/square meter
micrometer of water to foot mercury


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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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