Inch of Mercury Conversions

1 Inch of Mercury =
33.86389 Millibars
(exact result)
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.
A millibar is a unit of pressure equal to 1/1000th of a bar, or 100 pascals. Barometric pressure readings are often given in millibars.