›› Convert decibar to inch of mercury [0 °C]

inch of mercury

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How many decibar in 1 inch of mercury? The answer is 0.33863886666667.
We assume you are converting between decibar and inch of mercury [0 °C].
You can view more details on each measurement unit:
decibar or inch of mercury
The SI derived unit for pressure is the pascal.
1 pascal is equal to 0.0001 decibar, or 0.00029529983071445 inch of mercury.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between decibars and inches of mercury.
Type in your own numbers in the form to convert the units!

›› Quick conversion chart of decibar to inch of mercury

1 decibar to inch of mercury = 2.953 inch of mercury

5 decibar to inch of mercury = 14.76499 inch of mercury

10 decibar to inch of mercury = 29.52998 inch of mercury

15 decibar to inch of mercury = 44.29497 inch of mercury

20 decibar to inch of mercury = 59.05997 inch of mercury

25 decibar to inch of mercury = 73.82496 inch of mercury

30 decibar to inch of mercury = 88.58995 inch of mercury

40 decibar to inch of mercury = 118.11993 inch of mercury

50 decibar to inch of mercury = 147.64992 inch of mercury

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›› Common pressure conversions

decibar to millihg
decibar to pascal
decibar to kip/square foot
decibar to meter of air
decibar to kilogram/square centimeter
decibar to decipascal
decibar to gram/square centimeter
decibar to kip/square inch
decibar to millipascal
decibar to foot of water

›› Definition: Decibar

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

So 1 decibar = 10-1 bars.

The definition of a bar is as follows:

The bar is a measurement unit of pressure, equal to 1,000,000 dynes per square centimetre (baryes), or 100,000 newtons per square metre (pascals). The word bar is of Greek origin, báros meaning weight. Its official symbol is "bar"; the earlier "b" is now deprecated, but still often seen especially as "mb" rather than the proper "mbar" for millibars.

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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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