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Inch of mercury (inHg and ″Hg) is a non-SI unit of measurement for pressure. It is used for barometric pressure in weather reports, refrigeration and aviation in the United States. It is the pressure exerted by a column of mercury 1 inch (25.4 mm) in height at the standard acceleration of gravity.
- Inch of mercury - Simple English Wikipedia, the free encyclopedia
Inch of mercury. The inch of mercury ( inHg or "Hg) was a...
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From Wikipedia, the free encyclopedia. Redirect page. ......
- Inch of mercury - Simple English Wikipedia, the free encyclopedia
Inches of Mercury. (or in Hg) Unit of atmospheric pressure used in the United States. The name comes from the use of mercurial barometers which equate the height of a column of mercury with air pressure. One inch of mercury is equivalent to 33.86 millibars or 25.40 millimeters. See barometric pressure.
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A column of air an inch square extending out to the top of the atmosphere (over 20 miles) weighs about 14.5 pounds, and therefore exerts a pressure of 14.5 pounds per square inch (1 bar) at sea level.
From. To. Calculate. swap units ↺. 1 Inch of Mercury = 33.86389 Millibars. exact result. Decimal places. Inches of Mercury. Inches of mercury are commonly used to measure atmospheric pressure in the United States. A standard atmosphere of pressure is about 29.92 inches of mercury. Millibars.
Inch of mercury definition: a unit of atmospheric pressure, being the pressure equal to that exerted by a column of mercury one inch high under standard conditions of temperature and gravity: 33.864 millibars.
