How many inhg in 1 hpa?
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:

inhg or
hpa

The SI derived unit for **pressure** is the pascal.

1 pascal is equal to 0.00029529983071445 inhg, or 0.01 hpa.

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 inhg to hpa = 33.86389 hpa

2 inhg to hpa = 67.72777 hpa

3 inhg to hpa = 101.59166 hpa

4 inhg to hpa = 135.45555 hpa

5 inhg to hpa = 169.31943 hpa

6 inhg to hpa = 203.18332 hpa

7 inhg to hpa = 237.04721 hpa

8 inhg to hpa = 270.91109 hpa

9 inhg to hpa = 304.77498 hpa

10 inhg to hpa = 338.63887 hpa

You can do the reverse unit conversion from hpa to inhg, or enter any two units below:

inhg to millimeter water

inhg to decitorr

inhg to microbar

inhg to ton/square meter

inhg to petabar

inhg to poundal/square foot

inhg to pound/square inch

inhg to centitorr

inhg to picopascal

inhg to atmosphere

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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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