Millimeters of mercury to Standard atmospheres
1 mmHg ≈ 0.001316 atm. Edit either value to convert instantly.
Conversion formula
atm = mmHg × (133.322387415) × (1 / 101,325)1 mmHg ≈ 0.00131579 atm
millimeter of mercury (mmHg)
Millimeter of mercury is a unit of pressure: 1 mmHg = 133.322387415 Pa. This is conventional mercury at 0 °C and standard gravity; 1 torr is slightly different.
Source: NIST SP 811, Appendix B.9: conversion factors by quantity
standard atmosphere (atm)
Standard atmosphere is a unit of pressure: 1 atm = 101,325 Pa.
Source: NIST SP 811, Appendix B.9: conversion factors by quantity
Conversion table
| mmHg | atm |
|---|---|
| ≈ 0.00131579 | |
| ≈ 0.00263158 | |
| ≈ 0.00657895 | |
| ≈ 0.0131579 | |
| ≈ 0.0197368 | |
| ≈ 0.0263158 | |
| ≈ 0.0328947 | |
| ≈ 0.0394737 | |
| ≈ 0.0526316 | |
| ≈ 0.0592105 |
| mmHg | atm |
|---|---|
| ≈ 0.0657895 | |
| ≈ 0.0789474 | |
| ≈ 0.0921053 | |
| ≈ 0.105263 | |
| ≈ 0.118421 | |
| ≈ 0.131579 | |
| ≈ 0.197368 | |
| ≈ 0.210526 | |
| ≈ 0.223684 | |
| ≈ 0.236842 |
Frequently asked questions
How many standard atmospheres are in 1 millimeter of mercury?
1 mmHg ≈ 0.001316 atm. atm = mmHg × (133.322387415) × (1 / 101,325)
How do I convert mmHg to atm?
atm = mmHg × (133.322387415) × (1 / 101,325)
Is 1 millimeter of mercury bigger than 1 standard atmosphere?
1 mmHg ≈ 0.001316 atm.
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