1 Pa = 0.000145038 psi
1 pascal equals 0.000145038 pounds per square inch. To convert pascals to pounds per square inch, multiply the pascal value by 0.000145038. For quick reference: 1 Pa = 0.000145038 psi, 5 Pa = 0.000725189 psi, 10 Pa = 0.00145038 psi, 100 Pa = 0.0145038 psi.
Pounds per square inch = Pascals × 0.000145038Start with your value in pascals.
Multiply the pascal value by 0.000145038. This is the exact conversion factor from pascals to pounds per square inch.
The product is your value in pounds per square inch. For example, 5 Pa × 0.000145038 = 0.000725189 psi.
The exact factor from pascals to pounds per square inch is 0.000145038.
Pounds per square inch = Pascals × 0.000145038
Fifty common reference values, hand-picked for skim utility. Use the calculator above for any value not listed.
| Pascals (Pa) | Pounds per square inch (psi) |
|---|---|
| 0.001 Pa | 1.4504 × 10^−7 psi |
| 0.01 Pa | 1.4504 × 10^−6 psi |
| 0.1 Pa | 1.4504 × 10^−5 psi |
| 0.5 Pa | 7.2519 × 10^−5 psi |
| 1 Pa | 0.00014504 psi |
| 1.5 Pa | 0.00021756 psi |
| 2 Pa | 0.00029008 psi |
| 2.5 Pa | 0.00036259 psi |
| 3 Pa | 0.00043511 psi |
| 4 Pa | 0.00058015 psi |
| 5 Pa | 0.00072519 psi |
| 6 Pa | 0.00087023 psi |
| 7 Pa | 0.0010153 psi |
| 8 Pa | 0.0011603 psi |
| 9 Pa | 0.0013053 psi |
| 10 Pa | 0.0014504 psi |
| 14 Pa | 0.0020305 psi |
| 15 Pa | 0.0021756 psi |
| 20 Pa | 0.0029008 psi |
| 25 Pa | 0.0036259 psi |
| 30 Pa | 0.0043511 psi |
| 32 Pa | 0.0046412 psi |
| 35 Pa | 0.0050763 psi |
| 40 Pa | 0.0058015 psi |
| 50 Pa | 0.0072519 psi |
| 60 Pa | 0.0087023 psi |
| 75 Pa | 0.010878 psi |
| 80 Pa | 0.011603 psi |
| 100 Pa | 0.014504 psi |
| 101.325 Pa | 0.014696 psi |
| 150 Pa | 0.021756 psi |
| 200 Pa | 0.029008 psi |
| 250 Pa | 0.036259 psi |
| 300 Pa | 0.043511 psi |
| 400 Pa | 0.058015 psi |
| 500 Pa | 0.072519 psi |
| 760 Pa | 0.11023 psi |
| 1000 Pa | 0.14504 psi |
| 1013.25 Pa | 0.14696 psi |
| 2000 Pa | 0.29008 psi |
| 5000 Pa | 0.72519 psi |
| 10000 Pa | 1.4504 psi |
| 14.7 Pa | 0.0021321 psi |
| 50000 Pa | 7.2519 psi |
| 100000 Pa | 14.504 psi |
| 101325 Pa | 14.696 psi |
| 200000 Pa | 29.008 psi |
| 500000 Pa | 72.519 psi |
| 1000000 Pa | 145.04 psi |
| 10000000 Pa | 1450.4 psi |
Atmospheric pressure at sea level is about 101,325 Pa. A whisper at 1 meter exerts roughly 0.01 Pa of sound pressure.
The pascal (Pa) is the SI derived unit of pressure, defined as one newton per square meter. It is the universal unit in physics and engineering documentation. In everyday life pascals are tiny — atmospheric pressure is around 101,000 Pa — so multiples like kPa and MPa dominate practical use.
The pound per square inch (psi) is the customary US pressure unit, derived from the avoirdupois pound-force on a square inch (≈ 6,894.76 Pa exactly). It is the standard unit on US car tire-pressure stickers, scuba gauges in the US, and most plumbing specifications.