›› Convert inch of mercury [0 C] to hectopascal

inch of mercury

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How many inch of mercury in 1 hectopascal? The answer is 0.029529983071445.
We assume you are converting between inch of mercury [0 C] and hectopascal.
You can view more details on each measurement unit:
inch of mercury or hectopascal
The SI derived unit for pressure is the pascal.
1 pascal is equal to 0.00029529983071445 inch of mercury, or 0.01 hectopascal.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between inches of mercury and hectopascals.
Type in your own numbers in the form to convert the units!

›› Quick conversion chart of inch of mercury to hectopascal

1 inch of mercury to hectopascal = 33.86389 hectopascal

2 inch of mercury to hectopascal = 67.72777 hectopascal

3 inch of mercury to hectopascal = 101.59166 hectopascal

4 inch of mercury to hectopascal = 135.45555 hectopascal

5 inch of mercury to hectopascal = 169.31943 hectopascal

6 inch of mercury to hectopascal = 203.18332 hectopascal

7 inch of mercury to hectopascal = 237.04721 hectopascal

8 inch of mercury to hectopascal = 270.91109 hectopascal

9 inch of mercury to hectopascal = 304.77498 hectopascal

10 inch of mercury to hectopascal = 338.63887 hectopascal

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

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›› Common pressure conversions

inch of mercury to kilogram-force/square millimeter
inch of mercury to centipascal
inch of mercury to nanopascal
inch of mercury to pound/square foot
inch of mercury to millihg
inch of mercury to micrometer of water
inch of mercury to micropascal
inch of mercury to ton/square foot
inch of mercury to decibar
inch of mercury to poundal/square foot

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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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

›› Definition: Hectopascal

The SI prefix "hecto" represents a factor of 102, or in exponential notation, 1E2.

So 1 hectopascal = 102 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.

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