›› Convert inch of mercury [0 C] to terapascal


inch of mercury
terapascal

›› More information from the unit converter

How many inch of mercury in 1 terapascal? The answer is 295299830.71445.
We assume you are converting between inch of mercury [0 C] and terapascal.
You can view more details on each measurement unit:
inch of mercury or terapascal
The SI derived unit for pressure is the pascal.
1 pascal is equal to 0.00029529983071445 inch of mercury, or 1.0E-12 terapascal.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between inches of mercury and terapascals.
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›› Common pressure conversions

inch of mercury to zeptobar
inch of mercury to pieze
inch of mercury to pascal
inch of mercury to kilobar
inch of mercury to foot of water
inch of mercury to zettapascal
inch of mercury to inch of air
inch of mercury to newton/square meter
inch of mercury to centipascal
inch of mercury to kilopond/square meter


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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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


›› Definition: Terapascal

The SI prefix "tera" represents a factor of 1012, or in exponential notation, 1E12.

So 1 terapascal = 1012 pascals.

The definition of a pascal is as follows:

The pascal (symbol Pa) is the SI unit of pressure.It is equivalent to one newton per square metre. The unit is named after Blaise Pascal, the eminent French mathematician, physicist and philosopher.


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