Torr (Torr) to Pounds per square inch (psi) Conversion
Torr
The torr is a unit of pressure named after Evangelista Torricelli, the Italian physicist who invented the mercury barometer in 1643. One torr is defined as exactly 1/760 of a standard atmosphere (approximately 133.322 Pa). Numerically nearly identical to the millimetre of mercury (mmHg), it differs by less than 0.000015%. The torr is used in vacuum science and engineering: rough vacuum is 1–100 torr, fine vacuum 10⁻³–1 torr, and ultra-high vacuum below 10⁻⁹ torr.
Pounds per square inch
Pounds per square inch (psi) is a unit of pressure defined as one pound-force per square inch (approximately 6,894.76 Pa). It is the standard for tyre pressure, hydraulic systems, and gas cylinders in the United States. Standard atmospheric pressure is approximately 14.696 psi. In engineering, gauge pressure (psig — relative to atmosphere) is distinguished from absolute pressure (psia — relative to a perfect vacuum), a distinction critical in thermodynamics and fluid system design.
| Torr (Torr) | Pounds per square inch (psi) |
|---|---|
| 0.1 Torr | 0.0019336774704471 psi |
| 1 Torr | 0.019336774704471 psi |
| 2 Torr | 0.038673549408943 psi |
| 3 Torr | 0.058010324113414 psi |
| 5 Torr | 0.096683873522357 psi |
| 10 Torr | 0.19336774704471 psi |
| 20 Torr | 0.38673549408943 psi |
| 30 Torr | 0.58010324113414 psi |
| 50 Torr | 0.96683873522357 psi |
| 100 Torr | 1.9336774704471 psi |
| 1000 Torr | 19.336774704471 psi |
Frequently Asked Questions (FAQ)
How many pounds per square inch are in 1 torr?
1 torr (Torr) is exactly 0.019337 pounds per square inch (psi).
How do I convert torr to pounds per square inch?
Multiply the value in torr by 0.019337 to get the result in pounds per square inch. Or use the converter above — type any number and see the result instantly.