| Did you mean to convert | atmosphere [standard] atmosphere [technical] |
to | inches of mercury |
How many atmosphere [standard] in 1 inches of mercury? 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 [standard] or inches of mercury The SI derived unit for pressure is the pascal. 1 pascal is equal to 9.8692326671601E-6 atmosphere [standard], or 0.00029529983071445 inches of mercury. 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 [standard] to inches of mercury = 29.92126 inches of mercury
2 atmosphere [standard] to inches of mercury = 59.84251 inches of mercury
3 atmosphere [standard] to inches of mercury = 89.76377 inches of mercury
4 atmosphere [standard] to inches of mercury = 119.68502 inches of mercury
5 atmosphere [standard] to inches of mercury = 149.60628 inches of mercury
6 atmosphere [standard] to inches of mercury = 179.52753 inches of mercury
7 atmosphere [standard] to inches of mercury = 209.44879 inches of mercury
8 atmosphere [standard] to inches of mercury = 239.37004 inches of mercury
9 atmosphere [standard] to inches of mercury = 269.2913 inches of mercury
10 atmosphere [standard] to inches of mercury = 299.21255 inches of mercury
You can do the reverse unit conversion from inches of mercury to atmosphere [standard], 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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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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