How many pascal in 1 inches of mercury?
The answer is 3386.38866667.
We assume you are converting between pascal and inch of mercury [0 °C].
You can view more details on each measurement unit:
pascal or inches of mercury
The SI derived unit for pressure is the pascal.
1 pascal is equal to 0.000295299830714 inches of mercury.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between pascals and inches of mercury.
Type in your own numbers in the form to convert the units!
The pascal (symbol Pa) is the SI unit of pressure.It is equivalent to one newton per square metre. The unit is named after Blaise Pascal, the eminent French mathematician, physicist and philosopher.
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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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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