Convert Pascals to Pounds per square inch
1 pascal is 0.000145 psi. One pascal is exactly 0.00014503773773 pounds per square inch.
One pascal is 1.4504 × 10^-4 pounds per square inch. To convert pascals to pounds per square inch, multiply by 1.4504 × 10^-4; to go the other way, divide by 1.4504 × 10^-4 or multiply by 6894.7573. The factor is exact rather than rounded: it follows from NIST Special Publication 811. The SI unit: one newton spread over one square metre.
Factor checked against the defining standard · How we check
- Pascals × 1.4504 × 10^-4
value * 0.000145037737730 psi
1 pascal in every pressure unit
| Unit | Value | Exact factor |
|---|---|---|
| pounds per square inch | 0.0001450377377 psi | × 0.00014503773773 |
| bars | 0.00001 bar | × 0.00001 |
| pascals (as entered) | 1 Pa | — |
| kilopascals | 0.001 kPa | × 0.001 |
| megapascals | 0.000001 MPa | × 0.000001 |
| atmospheres | 0.000009869232667 atm | × 0.00000986923266716 |
| torr | 0.007500616827 Torr | × 0.00750061682704 |
| inches of mercury | 0.0002952998016 inHg | × 0.000295299801647 |
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 pascals to pounds per square inch?
- 1.Take the measurement in pascals.
- 2.Multiply by 1.4504 × 10^-4 — that is how many pounds per square inch fit in one pascal.
- 3.To go back the other way, divide by 1.4504 × 10^-4, or multiply by 6894.7573.
Worked example: 25 pascals to pounds per square inch
- Formula
- Pa × 1.4504 × 10^-4 = psi
- Arithmetic
- 25 × 1.4504 × 10^-4 = 0.003626 psi
- Answer
- 25 Pa = 0.003626 psi
The factor is rounded for display; the figure above is computed from the full value.
Pascals to pounds per square inch conversion table
| Pascals | Pounds per square inch |
|---|---|
| 1 Pa | 0.000145 psi |
| 2 Pa | 0.00029 psi |
| 3 Pa | 0.000435 psi |
| 4 Pa | 0.00058 psi |
| 5 Pa | 0.000725 psi |
| 6 Pa | 0.00087 psi |
| 7 Pa | 0.001015 psi |
| 8 Pa | 0.00116 psi |
| 9 Pa | 0.001305 psi |
| 10 Pa | 0.00145 psi |
| 12 Pa | 0.00174 psi |
| 15 Pa | 0.002176 psi |
| 20 Pa | 0.002901 psi |
| 25 Pa | 0.003626 psi |
| 50 Pa | 0.007252 psi |
| 100 Pa | 0.014504 psi |
| 200 Pa | 0.029008 psi |
| 300 Pa | 0.043511 psi |
| 500 Pa | 0.072519 psi |
| 1000 Pa | 0.145038 psi |
| 2000 Pa | 0.290075 psi |
| 5000 Pa | 0.725189 psi |
| 10000 Pa | 1.450377 psi |
What is a pascal?
The SI unit: one newton spread over one square metre. It is a small pressure — a sheet of paper resting on a table is about one pascal — which is why the kilopascal is what instruments actually read.
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 pascal?
One pascal is 1.4504 × 10^-4 pounds per square inch. Going the other way, one pound per square inch is 6894.7573 pascals. 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 pascal?
- 1.4504 × 10^-4. 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 pascals?
- Divide by 1.4504 × 10^-4, or multiply by 6894.7573 — they are the same operation.
Other pressure conversions
Pounds per square inch to pascals — the same conversion the other way.