›› Convert inch of mercury [0 °C] to bar

inch of mercury

›› More information from the unit converter

How many inch of mercury in 1 bar? The answer is 29.529983071445.
We assume you are converting between inch of mercury [0 °C] and bar.
You can view more details on each measurement unit:
inch of mercury or bar
The SI derived unit for pressure is the pascal.
1 pascal is equal to 0.00029529983071445 inch of mercury, or 1.0E-5 bar.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between inches of mercury and bars.
Type in your own numbers in the form to convert the units!

›› Quick conversion chart of inch of mercury to bar

1 inch of mercury to bar = 0.03386 bar

10 inch of mercury to bar = 0.33864 bar

20 inch of mercury to bar = 0.67728 bar

30 inch of mercury to bar = 1.01592 bar

40 inch of mercury to bar = 1.35456 bar

50 inch of mercury to bar = 1.69319 bar

100 inch of mercury to bar = 3.38639 bar

200 inch of mercury to bar = 6.77278 bar

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

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›› Common pressure conversions

inch of mercury to micron mercury
inch of mercury to water column
inch of mercury to kip/square inch
inch of mercury to femtobar
inch of mercury to gigapascal
inch of mercury to millimeter water
inch of mercury to micrometer of water
inch of mercury to micron of mercury
inch of mercury to barad
inch of mercury to dekapascal

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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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

The bar is a measurement unit of pressure, equal to 1,000,000 dynes per square centimetre (baryes), or 100,000 newtons per square metre (pascals). The word bar is of Greek origin, báros meaning weight. Its official symbol is "bar"; the earlier "b" is now deprecated, but still often seen especially as "mb" rather than the proper "mbar" for millibars.

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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!