How to convert atmospheres to millimeters of mercury
Formula: mmHg = atm × 760
Worked example: 1 atm → 1 × 760 = 760 mmHg
Atmospheres to millimeters of mercury conversion chart
| Atmospheres (atm) | Millimeters of mercury (mmHg) |
|---|---|
| 0.5 atm | 380 mmHg |
| 1 atm | 760 mmHg |
| 1.5 atm | 1,140 mmHg |
| 2 atm | 1,520 mmHg |
| 3 atm | 2,280 mmHg |
| 4 atm | 3,040 mmHg |
| 5 atm | 3,800 mmHg |
| 10 atm | 7,600 mmHg |
| 20 atm | 15,200 mmHg |
| 50 atm | 38,000 mmHg |
| 100 atm | 76,000 mmHg |
What is an atmosphere?
The standard atmosphere is defined as exactly 101,325 pascals, the average air pressure at sea level. Divers count roughly one extra atmosphere for every 10 meters, or 33 feet, of seawater.
What is a millimeter of mercury?
The millimeter of mercury, about 133.32 pascals, comes from mercury barometers. It remains the unit of blood pressure worldwide: a reading of 120/80 mmHg means a systolic pressure of 120 and a diastolic pressure of 80.