Psi to Torr Converter
How to convert psi to torr
torr = psi × 51.7149326
To convert psi to torr, multiply the number of psi by 51.7149326.
1 psi = 51.7149326 Torr
Examples
- A typical car tire pressure: 32 psi × 51.7149326 = 1,654.87784 Torr
- 100 psi × 51.7149326 = 5,171.49326 Torr
Good to know
Psi means pounds-force per square inch (lbf/in²). Gauge readings (psig) are measured relative to atmospheric pressure, absolute readings (psia) relative to a vacuum; the conversion factor is the same for both.
The torr is defined as 101,325/760 Pa. It differs from the millimeter of mercury (133.322387415 Pa) by less than one part in seven million.
Psi to torr conversion table
| Psi | Torr |
|---|---|
| 1 psi | 51.7149326 Torr |
| 5 psi | 258.574663 Torr |
| 10 psi | 517.149326 Torr |
| 14.7 psi | 760.209509 Torr |
| 15 psi | 775.723989 Torr |
| 20 psi | 1,034.29865 Torr |
| 25 psi | 1,292.87331 Torr |
| 30 psi | 1,551.44798 Torr |
| 32 psi | 1,654.87784 Torr |
| 35 psi | 1,810.02264 Torr |
| 40 psi | 2,068.5973 Torr |
| 45 psi | 2,327.17197 Torr |
| 50 psi | 2,585.74663 Torr |
| 60 psi | 3,102.89595 Torr |
| 80 psi | 4,137.19461 Torr |
| 100 psi | 5,171.49326 Torr |
Unit definitions
- Psi
- Psi is one pound-force per square inch, about 6894.757 pascals. It is the everyday pressure unit in the United States, used for tires, compressors and plumbing.
- Torr
- A torr is exactly 1/760 of a standard atmosphere, about 133.322 pascals. It is used mainly for vacuum measurements.