Convert Torr to Pounds per square inch
1 torr is 0.019337 psi. One torr is exactly 0.0193367747046 pounds per square inch.
One torr is 0.019336775 pounds per square inch. To convert torr to pounds per square inch, multiply by 0.019336775; to go the other way, divide by 0.019336775 or multiply by 51.714933. The factor is exact rather than rounded: it follows from NIST Special Publication 811. Exactly one seven-hundred-and-sixtieth of a standard atmosphere.
Factor checked against the defining standard · How we check
- Torr × 0.019336775
value * 0.01933677470460.019 psi
1 torr in every pressure unit
| Unit | Value | Exact factor |
|---|---|---|
| pounds per square inch | 0.0193367747 psi | × 0.0193367747046 |
| bars | 0.001333223684 bar | × 0.00133322368421 |
| pascals | 133.3223684 Pa | × 133.322368421 |
| kilopascals | 0.1333223684 kPa | × 0.133322368421 |
| megapascals | 0.0001333223684 MPa | × 0.000133322368421 |
| atmospheres | 0.001315789474 atm | × 0.00131578947368 |
| torr (as entered) | 1 Torr | — |
| inches of mercury | 0.03937006895 inHg | × 0.0393700689499 |
Factors are entered by hand from NIST Special Publication 811 rather than derived from a units library, so the ones that terminate are exact rather than rounded.
How do you convert torr to pounds per square inch?
- 1.Take the measurement in torr.
- 2.Multiply by 0.019336775 — that is how many pounds per square inch fit in one torr.
- 3.To go back the other way, divide by 0.019336775, or multiply by 51.714933.
Worked example: 25 torr to pounds per square inch
- Formula
- Torr × 0.019336775 = psi
- Arithmetic
- 25 × 0.019336775 = 0.483419 psi
- Answer
- 25 Torr = 0.483419 psi
The factor is rounded for display; the figure above is computed from the full value.
Torr to pounds per square inch conversion table
| Torr | Pounds per square inch |
|---|---|
| 1 Torr | 0.019337 psi |
| 2 Torr | 0.038674 psi |
| 3 Torr | 0.05801 psi |
| 4 Torr | 0.077347 psi |
| 5 Torr | 0.096684 psi |
| 6 Torr | 0.116021 psi |
| 7 Torr | 0.135357 psi |
| 8 Torr | 0.154694 psi |
| 9 Torr | 0.174031 psi |
| 10 Torr | 0.193368 psi |
| 12 Torr | 0.232041 psi |
| 15 Torr | 0.290052 psi |
| 20 Torr | 0.386735 psi |
| 25 Torr | 0.483419 psi |
| 50 Torr | 0.966839 psi |
| 100 Torr | 1.933677 psi |
| 200 Torr | 3.867355 psi |
| 300 Torr | 5.801032 psi |
| 500 Torr | 9.668387 psi |
| 1000 Torr | 19.336775 psi |
| 2000 Torr | 38.673549 psi |
| 5000 Torr | 96.683874 psi |
| 10000 Torr | 193.367747 psi |
What is a torr?
Exactly one seven-hundred-and-sixtieth of a standard atmosphere. Within a millionth of a millimetre of mercury, which is what it replaced, and still the unit of vacuum work.
What is a pound per square inch?
A pound-force spread over a square inch. Exact, because both parts are: it is 4.4482216152605 newtons divided by an inch squared. Every US tyre gauge, air line and pressure washer is marked in it.
How many pounds per square inch are in a torr?
One torr is 0.019336775 pounds per square inch. Going the other way, one pound per square inch is 51.714933 torr. Both figures come from the same defined relation rather than from a measurement, which is why they are the same today as they were in 1959.
Every pressure unit here
| Unit | Symbol | One of these is |
|---|---|---|
| Pounds per square inch | psi | 6894.7573 pascal |
| Bars | bar | 100000 pascal |
| Pascals | Pa | the base unit |
| Kilopascals | kPa | 1000 pascal |
| Megapascals | MPa | 1000000 pascal |
| Atmospheres | atm | 101325 pascal |
| Torr | Torr | 133.32237 pascal |
| Inches of mercury | inHg | 3386.389 pascal |
Questions people actually ask
- How many pounds per square inch are in a torr?
- 0.019336775. A pound-force spread over a square inch. Exact, because both parts are: it is 4.4482216152605 newtons divided by an inch squared. Every US tyre gauge, air line and pressure washer is marked in it.
- How do I convert pounds per square inch back to torr?
- Divide by 0.019336775, or multiply by 51.714933 — they are the same operation.
Other pressure conversions
Pounds per square inch to torr — the same conversion the other way.