How many Millibars (mbar) to 1 Inch of Mercury (inHg)

The conversion factor from millibars (mbar) to inches of mercury (inHg) is approximately 33.9. This conversion is derived from the relationship between the two units of pressure. One inch of mercury is equal to the pressure exerted by a column of mercury that is one inch in height, whereas one millibar is equal to one-thousandth of a bar, which is a unit of pressure. Since the density of mercury is about 13.6 times that of water, the conversion factor between the two units is approximately 33.9.