1 mmHg = 0.0193368 psi
1 millimeter of mercury equals 0.0193368 pounds per square inch. To convert millimeters of mercury to pounds per square inch, multiply the millimeter of mercury value by 0.0193368. For quick reference: 1 mmHg = 0.0193368 psi, 5 mmHg = 0.0966839 psi, 10 mmHg = 0.193368 psi, 100 mmHg = 1.93368 psi.
Pounds per square inch = Millimeters of mercury × 0.0193368Start with your value in millimeters of mercury.
Multiply the millimeter of mercury value by 0.0193368. This is the exact conversion factor from millimeters of mercury to pounds per square inch.
The product is your value in pounds per square inch. For example, 5 mmHg × 0.0193368 = 0.0966839 psi.
The exact factor from millimeters of mercury to pounds per square inch is 0.0193368.
Pounds per square inch = Millimeters of mercury × 0.0193368
Fifty common reference values, hand-picked for skim utility. Use the calculator above for any value not listed.
| Millimeters of mercury (mmHg) | Pounds per square inch (psi) |
|---|---|
| 0.001 mmHg | 1.9337 × 10^−5 psi |
| 0.01 mmHg | 0.00019337 psi |
| 0.1 mmHg | 0.0019337 psi |
| 0.5 mmHg | 0.0096684 psi |
| 1 mmHg | 0.019337 psi |
| 1.5 mmHg | 0.029005 psi |
| 2 mmHg | 0.038674 psi |
| 2.5 mmHg | 0.048342 psi |
| 3 mmHg | 0.05801 psi |
| 4 mmHg | 0.077347 psi |
| 5 mmHg | 0.096684 psi |
| 6 mmHg | 0.11602 psi |
| 7 mmHg | 0.13536 psi |
| 8 mmHg | 0.15469 psi |
| 9 mmHg | 0.17403 psi |
| 10 mmHg | 0.19337 psi |
| 14 mmHg | 0.27071 psi |
| 15 mmHg | 0.29005 psi |
| 20 mmHg | 0.38674 psi |
| 25 mmHg | 0.48342 psi |
| 30 mmHg | 0.5801 psi |
| 32 mmHg | 0.61878 psi |
| 35 mmHg | 0.67679 psi |
| 40 mmHg | 0.77347 psi |
| 50 mmHg | 0.96684 psi |
| 60 mmHg | 1.1602 psi |
| 75 mmHg | 1.4503 psi |
| 80 mmHg | 1.5469 psi |
| 100 mmHg | 1.9337 psi |
| 101.325 mmHg | 1.9593 psi |
| 150 mmHg | 2.9005 psi |
| 200 mmHg | 3.8674 psi |
| 250 mmHg | 4.8342 psi |
| 300 mmHg | 5.801 psi |
| 400 mmHg | 7.7347 psi |
| 500 mmHg | 9.6684 psi |
| 760 mmHg | 14.696 psi |
| 1000 mmHg | 19.337 psi |
| 1013.25 mmHg | 19.593 psi |
| 2000 mmHg | 38.674 psi |
| 5000 mmHg | 96.684 psi |
| 10000 mmHg | 193.37 psi |
| 14.7 mmHg | 0.28425 psi |
| 50000 mmHg | 966.84 psi |
| 100000 mmHg | 1933.7 psi |
| 101325 mmHg | 1959.3 psi |
| 200000 mmHg | 3867.4 psi |
| 500000 mmHg | 9668.4 psi |
| 1000000 mmHg | 19337 psi |
| 10000000 mmHg | 193368 psi |
Normal blood pressure is around 120/80 mmHg. Atmospheric pressure at sea level is roughly 760 mmHg. In pounds per square inch, that gives you: 1 mmHg = 0.0193368 psi, 10 mmHg = 0.193368 psi, 100 mmHg = 1.93368 psi.
The millimeter of mercury (mmHg) equals approximately 133.322 Pa — the pressure exerted by a 1 mm column of mercury under standard gravity. It is the conventional unit for blood pressure worldwide, even in countries that have otherwise gone fully metric.
The pound per square inch (psi) is the customary US pressure unit, derived from the avoirdupois pound-force on a square inch (≈ 6,894.76 Pa exactly). It is the standard unit on US car tire-pressure stickers, scuba gauges in the US, and most plumbing specifications.