How many ounce/square inch in 1 inch of mercury?
The answer is 7.8584664356258.

We assume you are converting between **ounce/square inch** and **inch of mercury [0 °C]**.

You can view more details on each measurement unit:

ounce/square inch or
inch of mercury

The SI derived unit for **pressure** is the pascal.

1 pascal is equal to 0.0023206038081155 ounce/square inch, or 0.00029529983071445 inch of mercury.

Note that rounding errors may occur, so always check the results.

Use this page to learn how to convert between ounces/square inch and inches of mercury.

Type in your own numbers in the form to convert the units!

1 ounce/square inch to inch of mercury = 0.12725 inch of mercury

5 ounce/square inch to inch of mercury = 0.63626 inch of mercury

10 ounce/square inch to inch of mercury = 1.27251 inch of mercury

20 ounce/square inch to inch of mercury = 2.54503 inch of mercury

30 ounce/square inch to inch of mercury = 3.81754 inch of mercury

40 ounce/square inch to inch of mercury = 5.09005 inch of mercury

50 ounce/square inch to inch of mercury = 6.36256 inch of mercury

75 ounce/square inch to inch of mercury = 9.54385 inch of mercury

100 ounce/square inch to inch of mercury = 12.72513 inch of mercury

You can do the reverse unit conversion from inch of mercury to ounce/square inch, or enter any two units below:

ounce/square inch to millitorr

ounce/square inch to zeptopascal

ounce/square inch to exabar

ounce/square inch to zeptobar

ounce/square inch to picobar

ounce/square inch to torr

ounce/square inch to inch mercury

ounce/square inch to inch water

ounce/square inch to sthene/square meter

ounce/square inch to micron 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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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.

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