Convert millimeters of mercury to PSI
1 mmHg = 0.01933678 psi. Change the amount below, or read the formula and the reference table further down.
1 millimeter of mercury equals
PSI
1 mmHg = 0.01933678 psi
The formula
Millimeters of mercury and PSI both measure pressure from the same zero, so a single multiplier does the job.
psi = mmHg × 0.0193367775
Going the other way? Convert PSI to millimeters of mercury.
Millimeters of mercury to PSI table
Common values, rounded for reading.
| Millimeters of mercury (mmHg) | PSI (psi) |
|---|---|
| 1 | 0.019337 |
| 2 | 0.038674 |
| 3 | 0.05801 |
| 4 | 0.077347 |
| 5 | 0.096684 |
| 6 | 0.116021 |
| 7 | 0.135357 |
| 8 | 0.154694 |
| 9 | 0.174031 |
| 10 | 0.193368 |
| 15 | 0.290052 |
| 20 | 0.386736 |
| 25 | 0.483419 |
| 30 | 0.580103 |
| 40 | 0.773471 |
| 50 | 0.966839 |
| 75 | 1.4503 |
| 100 | 1.9337 |
| 250 | 4.8342 |
| 500 | 9.6684 |
| 1,000 | 19.3368 |
Questions people ask
- How many PSI are in a millimeter of mercury?
- One millimeter of mercury equals 0.0193367775 PSI.
- How do I convert millimeters of mercury to PSI by hand?
- Multiply the number of millimeters of mercury by 0.0193367775. For a rough check, 0.019 is close enough for most everyday use.
- What is 1 millimeter of mercury in PSI?
- 1 millimeter of mercury is 0.01933678 PSI.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.