How many decibar in 1 in Hg? The answer is 0.3386389. We assume you are converting between decibar and inch mercury [0 °C]. You can view more details on each measurement unit: decibar or in Hg The SI derived unit for pressure is the pascal. 1 pascal is equal to 0.0001 decibar, or 0.00029529980164712 in Hg. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between decibars and inches mercury. Type in your own numbers in the form to convert the units!
1 decibar to in Hg = 2.953 in Hg
5 decibar to in Hg = 14.76499 in Hg
10 decibar to in Hg = 29.52998 in Hg
15 decibar to in Hg = 44.29497 in Hg
20 decibar to in Hg = 59.05996 in Hg
25 decibar to in Hg = 73.82495 in Hg
30 decibar to in Hg = 88.58994 in Hg
40 decibar to in Hg = 118.11992 in Hg
50 decibar to in Hg = 147.6499 in Hg
You can do the reverse unit conversion from in Hg to decibar, or enter any two units below:
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.
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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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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