Convert Atmosphere to Millimeter Of Mercury (atm to mm hg)

In next fields, kindly type your value in the text box under title [ From: ] to convert from Atmosphere to Millimeter of Mercury (atm to mm hg). As you type your value, the answer will be automatically calculated and displayed in the text box under title [ To: ].


Atmosphere (abbreviation: atm): is a unit of standard pressure, equal to 101325 Pa, or 1.01325 bar.

Millimeter Of Mercury (abbreviations: mm Hg, or mmHg): is a manometric unit of pressure, equal to 133.322387415 pascals. It is the extra pressure generated by a column of mercury of one millimeter high.

How to Convert Atmospheres to Millimeters Of Mercury

Example: How many Millimeters of Mercury are equivalent to 44.16 Atmospheres?


1 Atmospheres = 759.769 Millimeters of Mercury

44.16 Atmospheres = Y Millimeters of Mercury

Assuming Y is the answer, and by criss-cross principle;

Y equals 44.16 times 759.769 over 1

(i.e.) Y = 44.16 * 759.769 / 1 = 33551.39904 Millimeters of Mercury

Answer is: 33551.39904 Millimeters of Mercury are equivalent to 44.16 Atmospheres.

Practice Question: Convert the following units into mm hg:

N.B.: After working out the answer to each of the next questions, click adjacent button to see the correct answer.

( i ) 38.73 atm

( ii ) 25.16 atm

( iii ) 84.36 atm

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  • USMA
  • NIST

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