Convert Pounds per Square Inch to Millimeters of Mercury
psi to mmHg · pressure conversion
What are pounds per square inch and millimeters of mercury?
Pounds per square inch is the imperial pressure unit, standard for US tires and plumbing. Millimeters of mercury measure pressure by the height of a mercury column, used for blood pressure. For reference: car tires run around 32 psi (220 kPa), and sea-level air pressure is about 101 kPa.
How to convert pounds per square inch to millimeters of mercury
1 psi = 51.7151 mmHg. To convert, multiply the number of pounds per square inch by 51.7151. For example, 5 psi = 258.575 mmHg, and 20 psi = 1,034.3 mmHg. To go the other way, multiply millimeters of mercury by 0.0193367 (since 1 mmHg = 0.0193367 psi).
Pounds per Square Inch to Millimeters of Mercury conversion table
| Pounds per Square Inch (psi) | Millimeters of Mercury (mmHg) |
|---|---|
| 1 | 51.7151 |
| 2 | 103.43 |
| 5 | 258.575 |
| 10 | 517.151 |
| 50 | 2,585.75 |
| 100 | 5,171.51 |
| 1,000 | 51,715.1 |
FAQ
What is 1 psi in mmHg?
1 psi = 51.7151 mmHg. To convert any amount, multiply the number of pounds per square inch by 51.7151.
How do I convert millimeters of mercury back to pounds per square inch?
Go the other way: 1 mmHg = 0.0193367 psi, so multiply millimeters of mercury by 0.0193367 to get pounds per square inch.
Is a pounds per square inch bigger than a millimeters of mercury?
Yes — 1 psi is the larger unit, equal to 51.7151 mmHg.
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.