›› Convert gigapascal to

inch mercury

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How many gigapascal in 1 inch mercury? The answer is 3.386389E-6.
We assume you are converting between gigapascal and .
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gigapascal or inch mercury
The SI derived unit for pressure is the pascal.
1 pascal is equal to 1.0E-9 gigapascal, 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 gigapascals and inches mercury.
Type in your own numbers in the form to convert the units!

›› Quick conversion chart of gigapascal to inch mercury

1 gigapascal to inch mercury = 295299.80165 inch mercury

2 gigapascal to inch mercury = 590599.60329 inch mercury

3 gigapascal to inch mercury = 885899.40494 inch mercury

4 gigapascal to inch mercury = 1181199.20659 inch mercury

5 gigapascal to inch mercury = 1476499.00824 inch mercury

6 gigapascal to inch mercury = 1771798.80988 inch mercury

7 gigapascal to inch mercury = 2067098.61153 inch mercury

8 gigapascal to inch mercury = 2362398.41318 inch mercury

9 gigapascal to inch mercury = 2657698.21482 inch mercury

10 gigapascal to inch mercury = 2952998.01647 inch mercury

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You can do the reverse unit conversion from inch mercury to gigapascal, or enter any two units below:

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›› Common pressure conversions

gigapascal to yottapascal
gigapascal to zeptopascal
gigapascal to gram/square centimeter
gigapascal to nanobar
gigapascal to kilopond/square millimeter
gigapascal to ton/square meter
gigapascal to dekabar
gigapascal to terapascal
gigapascal to millimeter mercury
gigapascal to dekapascal

›› Definition: Gigapascal

The SI prefix "giga" represents a factor of 109, or in exponential notation, 1E9.

So 1 gigapascal = 109 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.

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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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

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