How many psf in 1 inch mercury? The answer is 70.726204882444. We assume you are converting between pound/square foot and inch mercury [0 °C]. You can view more details on each measurement unit: psf or inch mercury The SI derived unit for pressure is the pascal. 1 pascal is equal to 0.020885434273039 psf, or 0.00029529980164712 inch mercury. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between pounds/square foot and inches mercury. Type in your own numbers in the form to convert the units!
1 psf to inch mercury = 0.01414 inch mercury
10 psf to inch mercury = 0.14139 inch mercury
20 psf to inch mercury = 0.28278 inch mercury
30 psf to inch mercury = 0.42417 inch mercury
40 psf to inch mercury = 0.56556 inch mercury
50 psf to inch mercury = 0.70695 inch mercury
100 psf to inch mercury = 1.4139 inch mercury
200 psf to inch mercury = 2.82781 inch mercury
You can do the reverse unit conversion from inch mercury to psf, 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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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.
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