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How many inch of mercury in 1 ton/square inch [long]?
The answer is 4560.6862730267.

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

You can view more details on each measurement unit:

inch of mercury or
ton/square inch [long]

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

1 pascal is equal to 0.00029529983071445 inch of mercury, or 6.4748990181794E-8 ton/square inch [long].

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

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

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

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

inch of mercury to dyne/square centimeter

inch of mercury to gigapascal

inch of mercury to pieze

inch of mercury to millibar

inch of mercury to barye

inch of mercury to centimeter of mercury

inch of mercury to kilogram-force/square meter

inch of mercury to atmosphere

inch of mercury to zeptopascal

inch of mercury to meganewton/square meter

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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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