›› Convert megapascal to

inch mercury

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How many megapascal in 1 inch mercury? The answer is 0.003386389.
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megapascal or inch mercury
The SI derived unit for pressure is the pascal.
1 pascal is equal to 1.0E-6 megapascal, 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 megapascals and inches mercury.
Type in your own numbers in the form to convert the units!

›› Quick conversion chart of megapascal to inch mercury

1 megapascal to inch mercury = 295.2998 inch mercury

2 megapascal to inch mercury = 590.5996 inch mercury

3 megapascal to inch mercury = 885.8994 inch mercury

4 megapascal to inch mercury = 1181.19921 inch mercury

5 megapascal to inch mercury = 1476.49901 inch mercury

6 megapascal to inch mercury = 1771.79881 inch mercury

7 megapascal to inch mercury = 2067.09861 inch mercury

8 megapascal to inch mercury = 2362.39841 inch mercury

9 megapascal to inch mercury = 2657.69821 inch mercury

10 megapascal to inch mercury = 2952.99802 inch mercury

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

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›› Common pressure conversions

megapascal to meter of air
megapascal to attobar
megapascal to inch of mercury
megapascal to torr
megapascal to kilobar
megapascal to kilogram/square centimeter
megapascal to picopascal
megapascal to millimeter mercury
megapascal to yottabar
megapascal to megabar

›› Definition: Megapascal

The SI prefix "mega" represents a factor of 106, or in exponential notation, 1E6.

So 1 megapascal = 106 pascals.

The definition of a pascal is as follows:

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.

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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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