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!

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

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

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

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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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

The SI prefix "hecto" represents a factor of
10^{2}, or in exponential notation, 1E2.

So 1 hectopascal = 10^{2} 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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