How many inch mercury in 1 millidekabar? The answer is 0.29529980164712. We assume you are converting between inch mercury [0 °C] and millidekabar. You can view more details on each measurement unit: inch mercury or millidekabar The SI derived unit for pressure is the pascal. 1 pascal is equal to 0.00029529980164712 inch mercury, or 0.001 millidekabar. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between inches mercury and millidekabars. Type in your own numbers in the form to convert the units!
1 inch mercury to millidekabar = 3.38639 millidekabar
5 inch mercury to millidekabar = 16.93195 millidekabar
10 inch mercury to millidekabar = 33.86389 millidekabar
15 inch mercury to millidekabar = 50.79584 millidekabar
20 inch mercury to millidekabar = 67.72778 millidekabar
25 inch mercury to millidekabar = 84.65973 millidekabar
30 inch mercury to millidekabar = 101.59167 millidekabar
40 inch mercury to millidekabar = 135.45556 millidekabar
50 inch mercury to millidekabar = 169.31945 millidekabar
You can do the reverse unit conversion from millidekabar to inch mercury, or enter any two units below:
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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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.
The SI prefix "milli" represents a factor of 10-3, or in exponential notation, 1E-3.
So 1 millidekabar = 10-3 dekabars.
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