Millimeter Mercury (0°C) : Millimeter of mercury is a small pressure unit which represents the pressure pushing down due to gravity of any volume of liquid mercury which is 1mm high. It is widely used, and its value is approximately equal to a pressure of 1 torr. The standard value for atmospheric pressure at sea level (ATM) is equal to: 1 atm = 29.92 in Hg (inches of mercury) 1 atm = 760 mm Hg (millimeters of mercury) 1 atm = 1013.20 millibars 1 atm = 14.7 psi (pounds force per square inch) 1 atm = 1013.20 hPa (hectopascals) To further complicate matters, there are actually 2 values for an atmosphere. The pressure value 1.14 atm (standard atmosphere) in words is "one point one four atm (standard atmosphere)". This is simple to use online converter of weights and measures. Simply select the input unit, enter the value and click "Convert" button. The value will be converted to all other units of the actual measure.

The pressure value 31.85 inHg (inches of mercury) in words is "thirty-one point eight five inHg (inches of mercury)". This is simple to use online converter of weights and measures. Simply select the input unit, enter the value and click "Convert" button. The value will be converted to all other units of the actual measure. Inches of Mercury. 1 inch of mercury is the pressure exerted by a 1 inch high column of mercury at 0 °C (32 °F ) Inches of Mercury to Atmospheres formula