How to Convert Pascals to PSI
To convert from pascals to psi, multiply the value by 0.000145. The conversion is linear, meaning doubling the input doubles the output.
Conversion Formula
- Pascals to PSI:
psi = Pa × 0.0001450377377 - PSI to Pascals:
Pa = psi ÷ 0.0001450377377
Pascals to PSI Conversion Chart
| Pascals (Pa) | PSI (psi) |
|---|---|
| 0.1 | 1.45038e-5 |
| 0.25 | 3.62594e-5 |
| 0.5 | 7.25189e-5 |
| 1 | 0.000145 |
| 2 | 0.00029 |
| 3 | 0.000435 |
| 5 | 0.000725 |
| 10 | 0.00145 |
| 20 | 0.002901 |
| 25 | 0.003626 |
| 50 | 0.007252 |
| 100 | 0.014504 |
| 250 | 0.036259 |
| 1000 | 0.145038 |
Understanding the Units
What is a Pascal?
The pascal is the SI derived unit of pressure, equal to one newton of force per square meter (1 Pa = 1 N/m²).
Named after Blaise Pascal (1623–1662), the French mathematician and physicist whose experiments characterized atmospheric pressure.
Common contexts: fluid mechanics, meteorology.
What is a PSI?
One pound-force per square inch (psi) equals approximately 6,894.757 pascals.
Common contexts: tire pressure, plumbing, pneumatic systems (US).
Real-World Reference Points
| Item | Pascals (Pa) | PSI (psi) |
|---|---|---|
| Car tire (typical) | 220632.2334 | 32 |
| US household water | 344737.8647 | 50 |
| Bicycle road tire | 689475.7295 | 100 |