How to convert millimeters of mercury to pounds per square inch
psi = mmHg × 0.01933677746Multiply the value in millimeters of mercury by 0.01933677746. To go the other way, multiply by 51.7149252 (or divide by 0.01933677746).
A millimeter of mercury is smaller than a pound per square inch: it takes 51.7149252 millimeters of mercury to make one pound per square inch.
Worked examples
- 1 millimeter of mercury1 mmHg × 0.01933677746 = 0.01933677746 psi
- 5 millimeters of mercury5 mmHg × 0.01933677746 = 0.0966838873 psi
- 10 millimeters of mercury10 mmHg × 0.01933677746 = 0.1933677746 psi
- 20 millimeters of mercury20 mmHg × 0.01933677746 = 0.3867355492 psi
- 100 millimeters of mercury100 mmHg × 0.01933677746 = 1.933677746 psi
Millimeters of mercury to pounds per square inch conversion table
Values are calculated by the conversion engine and rounded to 8 significant figures.
| Millimeters of mercury (mmHg) | Pounds per square inch (psi) |
|---|---|
| 0.1 mmHg | 0.0019336777 psi |
| 0.25 mmHg | 0.0048341944 psi |
| 0.5 mmHg | 0.0096683887 psi |
| 1 mmHg | 0.019336777 psi |
| 2 mmHg | 0.038673555 psi |
| 3 mmHg | 0.058010332 psi |
| 4 mmHg | 0.07734711 psi |
| 5 mmHg | 0.096683887 psi |
| 6 mmHg | 0.11602066 psi |
| 7 mmHg | 0.13535744 psi |
| 8 mmHg | 0.15469422 psi |
| 9 mmHg | 0.174031 psi |
| 10 mmHg | 0.19336777 psi |
| Millimeters of mercury (mmHg) | Pounds per square inch (psi) |
|---|---|
| 12 mmHg | 0.23204133 psi |
| 15 mmHg | 0.29005166 psi |
| 20 mmHg | 0.38673555 psi |
| 25 mmHg | 0.48341944 psi |
| 30 mmHg | 0.58010332 psi |
| 40 mmHg | 0.7734711 psi |
| 50 mmHg | 0.96683887 psi |
| 75 mmHg | 1.4502583 psi |
| 100 mmHg | 1.9336777 psi |
| 250 mmHg | 4.8341944 psi |
| 500 mmHg | 9.6683887 psi |
| 1,000 mmHg | 19.336777 psi |
About the units
Millimeter of mercury (mmHg)
The conventional mmHg is 133.322387415 Pa. Blood pressure is measured in mmHg (e.g. 120/80).
Pound per square inch (psi)
One pound-force per square inch, about 6,894.76 Pa. US tire, air-compressor and hydraulic pressures are given in psi. One pound per square inch equals 6,894.757293 pascals (Pa).
Frequently asked questions
How many pounds per square inch are in one millimeter of mercury?
There are 0.01933677746 pounds per square inch in one millimeter of mercury, and this value is exact by definition.
How do I convert millimeters of mercury to pounds per square inch?
Multiply the number of millimeters of mercury by 0.01933677746. For example, 10 mmHg × 0.01933677746 = 0.1933677746 psi.
How many millimeters of mercury are in one pound per square inch?
One pound per square inch equals 51.7149252 millimeters of mercury. That is the reverse factor, 1 ÷ 0.01933677746.
What is 10 millimeters of mercury in pounds per square inch?
10 mmHg = 0.1933677746 psi.
Is this mmHg to psi converter accurate?
Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.