Conversion Amigo

Atmospheres to Millimeters Of Mercury Converter

759.999892

1 atm = 759.999892 mmHg

How to convert atmospheres to millimeters of mercury

millimeters of mercury = atmospheres × 759.999892

To convert atmospheres to millimeters of mercury, multiply the number of atmospheres by 759.999892.

1 atm = 759.999892 mmHg

Examples

  • Standard sea-level atmospheric pressure: 1 atm × 759.999892 = 759.999892 mmHg
  • 2 atm × 759.999892 = 1,519.99978 mmHg

Good to know

This is the standard atmosphere (atm), exactly 101,325 Pa. It is not the technical atmosphere (at), which is 1 kgf/cm² or 98,066.5 Pa.

This is the conventional millimeter of mercury, 133.322387415 Pa. It differs from the torr (101,325/760 Pa) by less than one part in seven million, so the two are interchangeable in practice.

Atmospheres to millimeters of mercury conversion table

Atmospheres (atm) Millimeters of mercury (mmHg)
0.1 atm 75.9999892 mmHg
0.25 atm 189.999973 mmHg
0.5 atm 379.999946 mmHg
0.75 atm 569.999919 mmHg
1 atm 759.999892 mmHg
1.5 atm 1,139.99984 mmHg
2 atm 1,519.99978 mmHg
3 atm 2,279.99968 mmHg
4 atm 3,039.99957 mmHg
5 atm 3,799.99946 mmHg
10 atm 7,599.99892 mmHg
20 atm 15,199.9978 mmHg
50 atm 37,999.9946 mmHg
100 atm 75,999.9892 mmHg

Unit definitions

Atmosphere (atm)
The standard atmosphere is defined as exactly 101,325 pascals, approximately the average air pressure at sea level. It is used as a reference pressure in chemistry and physics.
Millimeter of mercury (mmHg)
A millimeter of mercury is the pressure exerted by a 1 mm column of mercury, conventionally 133.322387415 pascals. It is the standard unit for blood pressure readings.

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