| Did you mean to convert | atmosphere [standard] atmosphere [technical] |
to | InHg |
How many atmosphere in 1 InHg? The answer is 0.033421057652767. We assume you are converting between atmosphere [standard] and inch of mercury [0 °C]. You can view more details on each measurement unit: atmosphere or InHg The SI derived unit for pressure is the pascal. 1 pascal is equal to 9.8692326671601E-6 atmosphere, or 0.00029529983071445 InHg. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between atmospheres and inches of mercury. Type in your own numbers in the form to convert the units!
1 atmosphere to InHg = 29.92126 InHg
2 atmosphere to InHg = 59.84251 InHg
3 atmosphere to InHg = 89.76377 InHg
4 atmosphere to InHg = 119.68502 InHg
5 atmosphere to InHg = 149.60628 InHg
6 atmosphere to InHg = 179.52753 InHg
7 atmosphere to InHg = 209.44879 InHg
8 atmosphere to InHg = 239.37004 InHg
9 atmosphere to InHg = 269.2913 InHg
10 atmosphere to InHg = 299.21255 InHg
You can do the reverse unit conversion from InHg to atmosphere, or enter any two units below:
The standard atmosphere (symbol: atm) is a unit of pressure defined as 101325 Pa (1.01325 bar). It is sometimes used as a reference pressure or standard pressure. It is approximately equal to Earth's atmospheric pressure at sea level.
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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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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