Convert atm to inch of mercury

More information from the unit converter

How many atm in 1 inch of mercury? The answer is 0.033421057652767. We assume you are converting between atmosphere [standard] and inch of mercury [0 °C]. You can view more details on each measurement unit: atm or inch of mercury The SI derived unit for pressure is the pascal. 1 pascal is equal to 9.8692326671601E-6 atm, 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 atmospheres and inches of mercury. Type in your own numbers in the form to convert the units!

Quick conversion chart of atm to inch of mercury

1 atm to inch of mercury = 29.92126 inch of mercury

2 atm to inch of mercury = 59.84251 inch of mercury

3 atm to inch of mercury = 89.76377 inch of mercury

4 atm to inch of mercury = 119.68502 inch of mercury

5 atm to inch of mercury = 149.60628 inch of mercury

6 atm to inch of mercury = 179.52753 inch of mercury

7 atm to inch of mercury = 209.44879 inch of mercury

8 atm to inch of mercury = 239.37004 inch of mercury

9 atm to inch of mercury = 269.2913 inch of mercury

10 atm to inch of mercury = 299.21255 inch of mercury

Want other units?

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

Common pressure conversions

atm to micropascal atm to technical atmosphere atm to attobar atm to centitorr atm to meter of air atm to zettabar atm to ton/square foot atm to megapascal atm to poundal/square foot atm to nanopascal

Definition: Atmosphere

The standard atmosphere (symbol: atm) is a unit of pressure defined as 101325 Pa (1.01325 bar). It is sometimes used as a reference pressure or standard pressure. It is approximately equal to Earth's atmospheric pressure at sea level.

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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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

[BLOGURL] 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!

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