›› Convert newton/square metre to inch of mercury [0 C]


newton/square meter
inch of mercury


›› More information from the unit converter

How many newton/square meter in 1 inch of mercury? The answer is 3386.3886666667.
We assume you are converting between newton/square metre and inch of mercury [0 C].
You can view more details on each measurement unit:
newton/square meter or inch of mercury
The SI derived unit for pressure is the pascal.
1 pascal is equal to 1 newton/square meter, 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 newtons/square meter and inches of mercury.
Type in your own numbers in the form to convert the units!



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›› Common pressure conversions

newton/square meter to kilopond/square millimeter
newton/square meter to pound/square inch
newton/square meter to centipascal
newton/square meter to zeptobar
newton/square meter to pascal
newton/square meter to inch of air
newton/square meter to meganewton/square meter
newton/square meter to centihg
newton/square meter to terabar
newton/square meter to exapascal


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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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