Pounds per square inch (psi) to Millimetres of mercury
Type a value in Pounds per square inch (psi) and get the result in Millimetres of mercury, calculated exactly.
1 Pounds per square inch (psi) ≈ 51.7149252 Millimetres of mercury
Conventional factorRounded for display to about 10 significant digits.
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Formula
mmHg = psi × 51.7149252039
To convert Pounds per square inch (psi) to Millimetres of mercury, multiply the value by 51.7149252039.
Worked examples
- 1 psi × 51.7149252039 ≈ 51.7149252 mmHg
- 100 psi × 51.7149252039 ≈ 5,171.49252 mmHg
- 50 psi × 51.7149252039 ≈ 2,585.74626 mmHg
This factor rests on a conventional or rounded value.
Conversion table
| Pounds per square inch (psi) | Millimetres of mercury (mmHg) |
|---|---|
| 1 | ≈ 51.71493 |
| 2 | ≈ 103.4299 |
| 3 | ≈ 155.1448 |
| 4 | ≈ 206.8597 |
| 5 | ≈ 258.5746 |
| 6 | ≈ 310.2896 |
| 7 | ≈ 362.0045 |
| 8 | ≈ 413.7194 |
| 9 | ≈ 465.4343 |
| 10 | ≈ 517.1493 |
| 15 | ≈ 775.7239 |
| 20 | ≈ 1,034.299 |
| 25 | ≈ 1,292.873 |
| 30 | ≈ 1,551.448 |
| 40 | ≈ 2,068.597 |
| 50 | ≈ 2,585.746 |
| 60 | ≈ 3,102.896 |
| 70 | ≈ 3,620.045 |
| 75 | ≈ 3,878.619 |
| 80 | ≈ 4,137.194 |
| 90 | ≈ 4,654.343 |
| 100 | ≈ 5,171.493 |
Values marked ≈ are rounded; the rest are exact.
Reverse table: Millimetres of mercury to Pounds per square inch (psi)
| Millimetres of mercury (mmHg) | Pounds per square inch (psi) |
|---|---|
| 1 | ≈ 0.01933678 |
| 2 | ≈ 0.03867355 |
| 3 | ≈ 0.05801033 |
| 4 | ≈ 0.07734711 |
| 5 | ≈ 0.09668389 |
| 6 | ≈ 0.1160207 |
| 7 | ≈ 0.1353574 |
| 8 | ≈ 0.1546942 |
| 9 | ≈ 0.174031 |
| 10 | ≈ 0.1933678 |
| 15 | ≈ 0.2900517 |
| 20 | ≈ 0.3867355 |
| 25 | ≈ 0.4834194 |
| 30 | ≈ 0.5801033 |
| 40 | ≈ 0.7734711 |
| 50 | ≈ 0.9668389 |
| 60 | ≈ 1.160207 |
| 70 | ≈ 1.353574 |
| 75 | ≈ 1.450258 |
| 80 | ≈ 1.546942 |
| 90 | ≈ 1.74031 |
| 100 | ≈ 1.933678 |
Convert Millimetres of mercury to Pounds per square inch (psi)
Unit definitions
- Pounds per square inch (psi) psi
- One pound-force per square inch: about 6894.757 pascals, exact from the 1959 pound and inch.
- Millimetres of mercury mmHg
- The conventional value of 133.322387415 pascals, used for blood pressure.
Questions people ask
Pounds per square inch (psi) to Millimetres of mercury: what is the conversion factor?
One psi is ≈ 51.7149252 mmHg.
How do I convert Pounds per square inch (psi) to Millimetres of mercury?
Use the formula above. For example, 100 psi = ≈ 5,171.49252 mmHg.
Is the conversion exact?
Very nearly. One of the units is based on a conventional or rounded value, so treat the result as a close approximation.
Factors checked 19 October 2026.