Convert atmospheres to millimeters of mercury
1 atm = 760 mmHg. Change the amount below, or read the formula and the reference table further down.
1 atmosphere equals
millimeters of mercury
1 atm = 760 mmHg
The formula
Atmospheres and millimeters of mercury both measure pressure from the same zero, so a single multiplier does the job.
mmHg = atm × 760
Going the other way? Convert millimeters of mercury to atmospheres.
Atmospheres to millimeters of mercury table
Common values, rounded for reading.
| Atmospheres (atm) | Millimeters of mercury (mmHg) |
|---|---|
| 1 | 760 |
| 2 | 1,520 |
| 3 | 2,280 |
| 4 | 3,040 |
| 5 | 3,800 |
| 6 | 4,560 |
| 7 | 5,320 |
| 8 | 6,080 |
| 9 | 6,840 |
| 10 | 7,600 |
| 15 | 11,400 |
| 20 | 15,200 |
| 25 | 19,000 |
| 30 | 22,800 |
| 40 | 30,400 |
| 50 | 37,999.99 |
| 75 | 56,999.99 |
| 100 | 75,999.99 |
| 250 | 189,999.97 |
| 500 | 379,999.95 |
| 1,000 | 759,999.89 |
Questions people ask
- How many millimeters of mercury are in a atmosphere?
- One atmosphere equals 760 millimeters of mercury.
- How do I convert atmospheres to millimeters of mercury by hand?
- Multiply the number of atmospheres by 760. For a rough check, 760 is close enough for most everyday use.
- What is 1 atmosphere in millimeters of mercury?
- 1 atmosphere is 760 millimeters of mercury.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.