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How many inch mercury in 1 lbs/square in? The answer is 2.0360204571891. We assume you are converting between inch mercury [0 °C] and pound/square inch [gauge]. You can view more details on each measurement unit: inch mercury or lbs/square in The SI derived unit for pressure is the pascal. 1 pascal is equal to 0.00029529980164712 inch mercury, or 0.00014503773800722 lbs/square in. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between inches mercury and pounds/square inch. Type in your own numbers in the form to convert the units!
1 inch mercury to lbs/square in = 0.49115 lbs/square in
5 inch mercury to lbs/square in = 2.45577 lbs/square in
10 inch mercury to lbs/square in = 4.91154 lbs/square in
20 inch mercury to lbs/square in = 9.82308 lbs/square in
30 inch mercury to lbs/square in = 14.73463 lbs/square in
40 inch mercury to lbs/square in = 19.64617 lbs/square in
50 inch mercury to lbs/square in = 24.55771 lbs/square in
75 inch mercury to lbs/square in = 36.83657 lbs/square in
100 inch mercury to lbs/square in = 49.11542 lbs/square in
You can do the reverse unit conversion from lbs/square in 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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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.
Psig (pound-force per square inch gauge) is a unit of pressure relative to the surrounding atmosphere. By contrast, psia measures pressure relative to a vacuum (such as that in space). At sea level, Earth's atmosphere actually exerts a pressure of 14.7 psi. Humans do not feel this pressure because internal pressure of liquid in their bodies matches the external pressure. If a pressure gauge is calibrated to read zero in space, then at sea level on Earth it would read 14.7 psi. Thus a reading of 30 psig on a tire gauge represents an absolute pressure of 44.7 psi.
ConvertUnits.com provides an online conversion calculator for all types of measurement units. You can find metric conversion tables for SI units, as well as English units, currency, and other data. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. Examples include mm, inch, 70 kg, 150 lbs, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!