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


zeptobar
inch of mercury

›› More information from the unit converter

How many zeptobar in 1 inch of mercury? The answer is 3.3863886666667E+19.
We assume you are converting between zeptobar and inch of mercury [0 °C].
You can view more details on each measurement unit:
zeptobar or inch of mercury
The SI derived unit for pressure is the pascal.
1 pascal is equal to 1.0E+16 zeptobar, 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 zeptobars and inches of mercury.
Type in your own numbers in the form to convert the units!




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›› Common pressure conversions

zeptobar to megabar
zeptobar to foot of mercury
zeptobar to micron of mercury
zeptobar to dyne/square centimeter
zeptobar to inch of air
zeptobar to hectobar
zeptobar to decitorr
zeptobar to inch of water
zeptobar to kilobar
zeptobar to ton/square meter


›› Definition: Zeptobar

The SI prefix "zepto" represents a factor of 10-21, or in exponential notation, 1E-21.

So 1 zeptobar = 10-21 bars.

The definition of a bar is as follows:

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.


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widely used for barometric pressure in weather reports and aviation in the United States, but is considered somewhat outdated elsewhere.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


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