Convert Pounds per square inch to Torr
1 pound per square inch is 51.714933 Torr. One pound per square inch is exactly 51.7149325715 torr.
One pound per square inch is 51.714933 torr. To convert pounds per square inch to torr, multiply by 51.714933; to go the other way, divide by 51.714933 or multiply by 0.019336775. The factor is exact rather than rounded: it follows from NIST Special Publication 811. A pound-force spread over a square inch.
Factor checked against the defining standard · How we check
- Pounds per square inch × 51.714933
value * 51.714932571551.715 Torr
1 pound per square inch in every pressure unit
| Unit | Value | Exact factor |
|---|---|---|
| pounds per square inch (as entered) | 1 psi | — |
| bars | 0.06894757293 bar | × 0.0689475729317 |
| pascals | 6,894.757293 Pa | × 6,894.75729317 |
| kilopascals | 6.894757293 kPa | × 6.89475729317 |
| megapascals | 0.006894757293 MPa | × 0.00689475729317 |
| atmospheres | 0.06804596391 atm | × 0.0680459639099 |
| torr | 51.71493257 Torr | × 51.7149325715 |
| inches of mercury | 2.036020461 inHg | × 2.03602046108 |
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 pounds per square inch to torr?
- 1.Take the measurement in pounds per square inch.
- 2.Multiply by 51.714933 — that is how many torr fit in one pound per square inch.
- 3.To go back the other way, divide by 51.714933, or multiply by 0.019336775.
Worked example: 25 pounds per square inch to torr
- Formula
- psi × 51.714933 = Torr
- Arithmetic
- 25 × 51.714933 = 1,292.873314 Torr
- Answer
- 25 psi = 1,292.873314 Torr
The factor is rounded for display; the figure above is computed from the full value.
Pounds per square inch to torr conversion table
| Pounds per square inch | Torr |
|---|---|
| 1 psi | 51.714933 Torr |
| 2 psi | 103.429865 Torr |
| 3 psi | 155.144798 Torr |
| 4 psi | 206.85973 Torr |
| 5 psi | 258.574663 Torr |
| 6 psi | 310.289595 Torr |
| 7 psi | 362.004528 Torr |
| 8 psi | 413.719461 Torr |
| 9 psi | 465.434393 Torr |
| 10 psi | 517.149326 Torr |
| 12 psi | 620.579191 Torr |
| 15 psi | 775.723989 Torr |
| 20 psi | 1,034.298651 Torr |
| 25 psi | 1,292.873314 Torr |
| 50 psi | 2,585.746629 Torr |
| 100 psi | 5,171.493257 Torr |
| 200 psi | 10,342.986514 Torr |
| 300 psi | 15,514.479771 Torr |
| 500 psi | 25,857.466286 Torr |
| 1000 psi | 51,714.932572 Torr |
| 2000 psi | 103,429.865143 Torr |
| 5000 psi | 258,574.662858 Torr |
| 10000 psi | 517,149.325715 Torr |
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.
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.
How many torr are in a pound per square inch?
One pound per square inch is 51.714933 torr. Going the other way, one torr is 0.019336775 pounds per square inch. 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 torr are in a pound per square inch?
- 51.714933. 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.
- How do I convert torr back to pounds per square inch?
- Divide by 51.714933, or multiply by 0.019336775 — they are the same operation.
Other pressure conversions
Torr to pounds per square inch — the same conversion the other way.