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Unit Conversion Calculators
mmHg to ATM Calculator
Convert a pressure in millimeters of mercury (mmHg) to standard atmospheres (atm).
Atmospheres
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About the mmHg to ATM Calculator
Millimeters of mercury (mmHg) is a pressure unit based on the height of a mercury column in a barometer, still widely used for blood pressure readings and vacuum measurements. One standard atmosphere is defined as exactly 760 mmHg.
Formula: ATM = mmHg ÷ 760
Common in medicine for blood pressure, and in chemistry and meteorology for barometric pressure readings.
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