Pascals to Psi
The pascal is the SI unit of pressure, defined as one newton per square meter, used in scientific and engineering contexts. Pounds per square inch is the standard pressure unit for tire inflation and plumbing in the US. 1 Pa equals ≈0.000145038 psi, so converting between them is a matter of multiplying by that fixed factor — type any value into the converter below and both sides update instantly as you type.
Both units belong to pressure, measured here against pressure's base unit (Pa) — every other pressure unit on this site converts through that same reference point, which is why the table below can also be read as a quick cross-check against nearby values.
Formula
psi = Pa × ≈0.000145038
Pa = psi × ≈6,894.76
Worked example: 5 Pa × ≈0.000145038 = ≈0.000725189 psi.
Conversion table
| Pascal (Pa) | PSI (psi) |
|---|---|
| 1 Pa | ≈0.000145038 psi |
| 2 Pa | ≈0.000290075 psi |
| 3 Pa | ≈0.000435113 psi |
| 5 Pa | ≈0.000725189 psi |
| 10 Pa | ≈0.00145038 psi |
| 20 Pa | ≈0.00290075 psi |
| 25 Pa | ≈0.00362594 psi |
| 50 Pa | ≈0.00725189 psi |
| 100 Pa | ≈0.0145038 psi |
| 250 Pa | ≈0.0362594 psi |
| 500 Pa | ≈0.0725189 psi |
| 1,000 Pa | ≈0.145038 psi |
Frequently asked
- How many PSI in a pascal?
- 1 Pa equals ≈0.000145038 psi.
- How do I convert Pascals to PSI?
- Multiply the value in Pa by ≈0.000145038 to get psi. The converter above does this instantly as you type.
- Is the conversion exact?
- Yes — Pascal and PSI are both defined by a fixed conversion factor to pressure's base unit (Pa), so the result shown is exact to the precision displayed, not an approximation.