›› Convert millibar to

inch mercury

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How many millibar in 1 inch mercury? The answer is 33.86389.
We assume you are converting between millibar and .
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millibar or inch mercury
The SI derived unit for pressure is the pascal.
1 pascal is equal to 0.01 millibar, or 0.00029529980164712 inch mercury.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between millibars and inches mercury.
Type in your own numbers in the form to convert the units!

›› Quick conversion chart of millibar to inch mercury

1 millibar to inch mercury = 0.02953 inch mercury

10 millibar to inch mercury = 0.2953 inch mercury

20 millibar to inch mercury = 0.5906 inch mercury

30 millibar to inch mercury = 0.8859 inch mercury

40 millibar to inch mercury = 1.1812 inch mercury

50 millibar to inch mercury = 1.4765 inch mercury

100 millibar to inch mercury = 2.953 inch mercury

200 millibar to inch mercury = 5.906 inch mercury

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

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›› Common pressure conversions

millibar to zeptopascal
millibar to attopascal
millibar to pieze
millibar to micron of mercury
millibar to millimeter of water
millibar to megapascal
millibar to kilogram/square centimeter
millibar to foot of mercury
millibar to micropascal
millibar to millimeter mercury

›› 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)

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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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

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ConvertUnits.com provides an online conversion calculator for all types of measurement units. You can find metric conversion tables for SI units, as well as English units, currency, and other data. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. Examples include mm, inch, 100 kg, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!