››Convert to millihg

 inch mercury millihg

How many inch mercury in 1 millihg? The answer is 0.03937007532212.
We assume you are converting between and millihg.
You can view more details on each measurement unit:
inch mercury or millihg
The SI derived unit for pressure is the pascal.
1 pascal is equal to 0.00029529980164712 inch mercury, or 0.0075006156130264 millihg.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between inches mercury and millihg.
Type in your own numbers in the form to convert the units!

››Quick conversion chart of inch mercury to millihg

1 inch mercury to millihg = 25.4 millihg

2 inch mercury to millihg = 50.8 millihg

3 inch mercury to millihg = 76.20001 millihg

4 inch mercury to millihg = 101.60001 millihg

5 inch mercury to millihg = 127.00001 millihg

6 inch mercury to millihg = 152.40001 millihg

7 inch mercury to millihg = 177.80002 millihg

8 inch mercury to millihg = 203.20002 millihg

9 inch mercury to millihg = 228.60002 millihg

10 inch mercury to millihg = 254.00002 millihg

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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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

››Definition: Millihg

The SI prefix "milli" represents a factor of 10-3, or in exponential notation, 1E-3.

So 1 millihg = 10-3 hg.

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