## ››Convert pound/square inch [absolute] to

 pound/square inch [absolute] inch mercury

 Did you mean to convert pound/square inch pound/square inch [gauge] pound/square inch [absolute] to inch mercury

How many pound/square inch [absolute] in 1 inch mercury? The answer is 0.49115420057253.
We assume you are converting between pound/square inch [absolute] and .
You can view more details on each measurement unit:
pound/square inch [absolute] or inch mercury
The SI derived unit for pressure is the pascal.
1 pascal is equal to 0.00014503773800722 pound/square inch [absolute], 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 inch and inches mercury.
Type in your own numbers in the form to convert the units!

## ››Quick conversion chart of pound/square inch [absolute] to inch mercury

1 pound/square inch [absolute] to inch mercury = 2.03602 inch mercury

5 pound/square inch [absolute] to inch mercury = 10.1801 inch mercury

10 pound/square inch [absolute] to inch mercury = 20.3602 inch mercury

15 pound/square inch [absolute] to inch mercury = 30.54031 inch mercury

20 pound/square inch [absolute] to inch mercury = 40.72041 inch mercury

25 pound/square inch [absolute] to inch mercury = 50.90051 inch mercury

30 pound/square inch [absolute] to inch mercury = 61.08061 inch mercury

40 pound/square inch [absolute] to inch mercury = 81.44082 inch mercury

50 pound/square inch [absolute] to inch mercury = 101.80102 inch mercury

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You can do the reverse unit conversion from inch mercury to pound/square inch [absolute], or enter any two units below:

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## ››Definition: Pound/square inch

Pounds per square inch absolute (psia) is used to make it clear that the pressure is relative to a vacuum rather than the ambient atmospheric pressure. Since atmospheric pressure at sea level is around 14.7 psi, this will be added to any pressure reading made in air at sea level.

## ››Definition: Inch mercury

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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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.

## ››Metric conversions and more

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, 100 kg, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!