1 atmosphere 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
Values either side of 1 atm.
| Atmospheres (atm) | Millimeters of mercury (mmHg) |
|---|---|
| -4 | -3,040 |
| -3.5 | -2,660 |
| -3 | -2,280 |
| -2.5 | -1,900 |
| -2 | -1,520 |
| -1.5 | -1,140 |
| -1 | -760 |
| -0.5 | -380 |
| 0 | 0 |
| 0.5 | 380 |
| 1 | 760 |
| 1.5 | 1,140 |
| 2 | 1,520 |
| 2.5 | 1,900 |
| 3 | 2,280 |
| 3.5 | 2,660 |
| 4 | 3,040 |
| 4.5 | 3,420 |
| 5 | 3,800 |
| 5.5 | 4,180 |
| 6 | 4,560 |
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.