How many inch of mercury in 1 millibar?
The answer is 0.029529983071445.

We assume you are converting between **inch of mercury [0 °C]** and **millibar**.

You can view more details on each measurement unit:

inch of mercury or
millibar

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

1 pascal is equal to 0.00029529983071445 inch of 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 of mercury and millibars.

Type in your own numbers in the form to convert the units!

1 inch of mercury to millibar = 33.86389 millibar

2 inch of mercury to millibar = 67.72777 millibar

3 inch of mercury to millibar = 101.59166 millibar

4 inch of mercury to millibar = 135.45555 millibar

5 inch of mercury to millibar = 169.31943 millibar

6 inch of mercury to millibar = 203.18332 millibar

7 inch of mercury to millibar = 237.04721 millibar

8 inch of mercury to millibar = 270.91109 millibar

9 inch of mercury to millibar = 304.77498 millibar

10 inch of mercury to millibar = 338.63887 millibar

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

inch of mercury to kilogram-force/square meter

inch of mercury to kilopond/square meter

inch of mercury to dekabar

inch of mercury to pound/square foot

inch of mercury to centihg

inch of mercury to microbar

inch of mercury to centimeter of water

inch of mercury to megabar

inch of mercury to petapascal

inch of mercury to yottapascal

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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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

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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