›› Convert to millibar

inch mercury

›› More information from the unit converter

How many inch mercury in 1 millibar? The answer is 0.029529980164712.
We assume you are converting between and millibar.
You can view more details on each measurement unit:
inch mercury or millibar
The SI derived unit for pressure is the pascal.
1 pascal is equal to 0.00029529980164712 inch mercury, or 0.01 millibar.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between inches mercury and millibars.
Type in your own numbers in the form to convert the units!

›› Quick conversion chart of inch mercury to millibar

1 inch mercury to millibar = 33.86389 millibar

2 inch mercury to millibar = 67.72778 millibar

3 inch mercury to millibar = 101.59167 millibar

4 inch mercury to millibar = 135.45556 millibar

5 inch mercury to millibar = 169.31945 millibar

6 inch mercury to millibar = 203.18334 millibar

7 inch mercury to millibar = 237.04723 millibar

8 inch mercury to millibar = 270.91112 millibar

9 inch mercury to millibar = 304.77501 millibar

10 inch mercury to millibar = 338.6389 millibar

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

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›› Common pressure conversions

inch mercury to yottabar
inch mercury to inch of air
inch mercury to terabar
inch mercury to centimeter of mercury
inch mercury to micron mercury
inch mercury to foot of mercury
inch mercury to gigapascal
inch mercury to pieze
inch mercury to centipascal
inch mercury to centimeter mercury

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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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

A millibar (mb) is 1/1000th of a bar, a unit for measurement of pressure. It is not an SI unit of measure, however it is one of the units used in meteorology when describing atmospheric pressure. The SI unit is the pascal (Pa), with 1 millibar = 100 pascals (a hectopascal)

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