Convert mmHg to Atmospheres
mmHg to Atmospheres conversion table
| mmHg (mmHg) | Atmospheres (atm) |
|---|---|
| 1 mmHg | 0.001316 atm |
| 2 mmHg | 0.002632 atm |
| 5 mmHg | 0.006579 atm |
| 10 mmHg | 0.013158 atm |
| 25 mmHg | 0.032895 atm |
| 50 mmHg | 0.065789 atm |
| 100 mmHg | 0.131579 atm |
| 200 mmHg | 0.263157 atm |
| 500 mmHg | 0.657893 atm |
| 1000 mmHg | 1.315786 atm |
How to convert mmhg to atmospheres
Millimeters of mercury (mmHg) and atmospheres measure pressure, especially in medical and meteorological contexts. Standard atmospheric pressure at sea level equals 760 mmHg = 1 atm. mmHg is used for blood pressure and barometric readings.
Divide mmHg by 760 to get atmospheres. Formula: atm = mmHg ÷ 760. 760 mmHg = 1 atm. 120/80 mmHg blood pressure refers to systolic/diastolic, not absolute pressure. Barometric 750 mmHg = 0.987 atm.
Medical professionals, weather observers, and vacuum system engineers convert between mmHg, atm, kPa, and PSI regularly.
Key values: 760 mmHg = 1 atm = 14.7 psi = 101.3 kPa. 1 mmHg ≈ 0.00132 atm.
Related conversions
Frequently asked questions
760 mmHg = 1 atmosphere exactly (by historical definition).
Blood pressure (120/80 mmHg) is gauge pressure above atmospheric, not absolute. Absolute would be ~1.16/1.10 atm.
Multiply atm by 760. Example: 2 atm × 760 = 1,520 mmHg.