The short answer
- 1 bar ≈ 14.50377 psi
- 1 psi ≈ 0.06894757 bar
Worked example2.2 bar × 14.50377377 = 31.9083 psi
To convert bars to pounds per square inch, multiply the number of bars by 14.50377377.
Bar. The bar is exactly 100,000 pascals, close to average air pressure at sea level (1 standard atmosphere is 1.01325 bar).
Pound per square inch. Pounds per square inch: the force of one pound on one square inch, about 6,894.76 pascals. Tyre pressures in the US and UK are usually given in psi.
| Bars (bar) | Pounds per square inch (psi) |
|---|---|
| 0.5 | 7.251887 |
| 1 | 14.50377 |
| 1.5 | 21.75566 |
| 1.8 | 26.10679 |
| 2 | 29.00755 |
| 2.1 | 30.45792 |
| 2.2 | 31.9083 |
| 2.3 | 33.35868 |
| 2.4 | 34.80906 |
| 2.5 | 36.25943 |
| 2.8 | 40.61057 |
| 3 | 43.51132 |
| 3.5 | 50.76321 |
| 4 | 58.0151 |
| 5 | 72.51887 |
| 6 | 87.02264 |
| 8 | 116.0302 |
| 10 | 145.0377 |
| 15 | 217.5566 |
| 200 | 2,900.755 |
Values are rounded to 7 significant figures.
Multiply the number of bars by 14.50377377. For example, 2.2 bar × 14.50377377 = 31.9083 psi.
One bar is about 14.50377 pounds per square inch.
Yes. Both units have exact legal definitions, so the factor is exact. Values on this page are rounded to 7 significant figures.