›› Convert inch of mercury [0 °C] to ounce/square inch

ounce/square inch

›› More information from the unit converter

How many inHg in 1 ounce/square inch? The answer is 0.12725129110008.
We assume you are converting between inch of mercury [0 °C] and ounce/square inch.
You can view more details on each measurement unit:
inHg or ounce/square inch
The SI derived unit for pressure is the pascal.
1 pascal is equal to 0.00029529983071445 inHg, or 0.0023206038081155 ounce/square inch.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between inches of mercury and ounces/square inch.
Type in your own numbers in the form to convert the units!

›› Quick conversion chart of inHg to ounce/square inch

1 inHg to ounce/square inch = 7.85847 ounce/square inch

5 inHg to ounce/square inch = 39.29233 ounce/square inch

10 inHg to ounce/square inch = 78.58466 ounce/square inch

15 inHg to ounce/square inch = 117.877 ounce/square inch

20 inHg to ounce/square inch = 157.16933 ounce/square inch

25 inHg to ounce/square inch = 196.46166 ounce/square inch

30 inHg to ounce/square inch = 235.75399 ounce/square inch

40 inHg to ounce/square inch = 314.33866 ounce/square inch

50 inHg to ounce/square inch = 392.92332 ounce/square inch

›› Want other units?

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

Enter two units to convert


›› Common pressure conversions

inHg to exapascal
inHg to gram/square centimeter
inHg to foot water
inHg to zeptopascal
inHg to newton/square millimeter
inHg to technical atmosphere
inHg to inch of air
inHg to centimeter of water
inHg to kilopascal
inHg to millitorr

›› Definition: Inch of 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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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!