What is inch of mercury?

Inch of mercury (inHg) is a pressure unit representing the pressure exerted by a one-inch column of mercury. It is used in aviation altimetry, barometric pressure readings, and vacuum measurements in the United States.

What is atmosphere?

An atmosphere (atm) is a pressure unit equal to mean atmospheric pressure at sea level, approximately 101,325 pascals. It is used as a reference in chemistry, diving tables, and altitude calculations.

Worked examples

1 inch of mercury = 0.03342106 atmosphere

1 atmosphere = 101,325 pascal

More Pressure conversions

• Convert inch of mercury to pascal
• Convert inch of mercury to kilopascal
• Convert inch of mercury to bar
• Convert inch of mercury to pound per square inch
• Convert inch of mercury to atmosphere
• Convert inch of mercury to millibar
• Convert inch of mercury to hectopascal
• Convert inch of mercury to torr
• Convert inch of mercury to megapascal