PSI to Torr Converter
Pressure · unit-converter
Convert PSI to Torr with a fixed input and output unit, step-by-step formula line, and reference tables. All calculations bridge through pascal with fixed definitions (standard atmosphere = 101,325 Pa; torr and mmHg = atm/760; plus industrial/manometer units like kgf/cm², inHg, inH2O, and mmH2O).
About PSI
Pounds-force per square inch (PSI) is common for tires, hydraulics, and US industrial equipment.
About Torr
The torr is defined as 1/760 of a standard atmosphere (≈133.32236842105263 Pa). It is widely used in vacuum science alongside pascal.
How to convert psi to torr
1 psi equals 51.71493257150436 torr in this tool (via pascal):
1 psi = (6894.757293168 Pa ÷ 133.32236842105263 Pa) torr = 51.71493257150436 torr
Each psi carries 6894.757293168 Pa and each torr 133.32236842105263 Pa, so one psi equals 6894.757293168 ÷ 133.32236842105263 torr.
Let p(psi) be pressure in PSI (psi), and p(torr) in Torr (torr). Then:
p(torr) = p(psi) × (6894.757293168 / 133.32236842105263)
Equivalently, divide by how many psi fit into one torr (Pa per torr divided by Pa per psi):
p(torr) = p(psi) ÷ 0.01933677470462397
Examples
Example #1: Convert 1 psi to torr
1 psi = 1 psi × (6894.757293168/133.32236842105263) torr = 51.7149325715 torr
1 psi = 1 psi ÷ 0.01933677470462397 = 51.7149325715 torr
1 psi × (6,894.757293168/133.32236842105263) = 51.714933 torr
Example #2: Convert 10 psi to torr
10 psi = 10 psi × (6894.757293168/133.32236842105263) torr = 517.149325715 torr
10 psi = 10 psi ÷ 0.01933677470462397 = 517.149325715 torr
10 psi × (6,894.757293168/133.32236842105263) = 517.149326 torr
Summary
To convert PSI to Torr, multiply the value in psi by (6894.757293168 Pa per psi) / (133.32236842105263 Pa per torr). Equivalently: value_torr = value_psi × (6894.757293168 / 133.32236842105263). Numerically, 1 psi equals 51.71493257150436 torr.
Relationship context
Both PSI and Torr are converted by fixed multiples of the pascal. Multiplying by (Pa per psi) ÷ (Pa per torr) gives the same result as passing through pascal, keeping bar, atm, PSI, kPa, hPa, torr, and mmHg consistent on the hub.
Conversion tables
| PSI (psi) | Torr (torr) |
|---|---|
| 0.1 | 5.1714932571 |
| 1 | 51.7149325715 |
| 2 | 103.429865143 |
| 3 | 155.144797715 |
| 4 | 206.859730286 |
| 5 | 258.574662858 |
| 6 | 310.289595429 |
| 7 | 362.004528001 |
| 8 | 413.719460572 |
| 9 | 465.434393144 |
| PSI (psi) | Torr (torr) |
|---|---|
| 10 | 517.149325715 |
| 20 | 1,034.29865143 |
| 30 | 1,551.44797715 |
| 40 | 2,068.59730286 |
| 50 | 2,585.74662858 |
| 60 | 3,102.89595429 |
| 70 | 3,620.04528001 |
| 80 | 4,137.19460572 |
| 90 | 4,654.34393144 |
| 100 | 5,171.49325715 |