Convert Millimeters of Mercury to Pounds per Square Inch
mmHg to psi · pressure conversion
What are millimeters of mercury and pounds per square inch?
Millimeters of mercury measure pressure by the height of a mercury column, used for blood pressure. Pounds per square inch is the imperial pressure unit, standard for US tires and plumbing. For reference: car tires run around 32 psi (220 kPa), and sea-level air pressure is about 101 kPa.
How to convert millimeters of mercury to pounds per square inch
1 mmHg = 0.0193367 psi. To convert, multiply the number of millimeters of mercury by 0.0193367. For example, 5 mmHg = 0.0966836 psi, and 20 mmHg = 0.386734 psi. To go the other way, multiply pounds per square inch by 51.7151 (since 1 psi = 51.7151 mmHg).
Millimeters of Mercury to Pounds per Square Inch conversion table
| Millimeters of Mercury (mmHg) | Pounds per Square Inch (psi) |
|---|---|
| 1 | 0.0193367 |
| 2 | 0.0386734 |
| 5 | 0.0966836 |
| 10 | 0.193367 |
| 50 | 0.966836 |
| 100 | 1.93367 |
| 1,000 | 19.3367 |
FAQ
What is 1 mmHg in psi?
1 mmHg = 0.0193367 psi. To convert any amount, multiply the number of millimeters of mercury by 0.0193367.
How do I convert pounds per square inch back to millimeters of mercury?
Go the other way: 1 psi = 51.7151 mmHg, so multiply pounds per square inch by 51.7151 to get millimeters of mercury.
Is a millimeters of mercury bigger than a pounds per square inch?
No — 1 mmHg is the smaller unit, equal to 0.0193367 psi (it takes 51.7151 mmHg to make one psi).
Are these pressure conversions exact?
They use the standard internationally-defined conversion factors. Results are rounded to six significant figures for readability, which is accurate enough for everyday and most technical use.