How to convert bars to pounds per square inch
Formula: psi = bar × 14.5038
Worked example: 2.5 bar → 2.5 × 14.5038 = 36.2594 psi
Multiply bar by 14.5038 to get psi. A European tire pressure of 2.3 bar is about 33 psi, and 2.5 bar about 36 psi. For a quick estimate, multiply by 14.5.
Bars to pounds per square inch conversion chart
| Bars (bar) | Pounds per square inch (psi) |
|---|---|
| 0.5 bar | 7.25189 psi |
| 1 bar | 14.5038 psi |
| 1.5 bar | 21.7557 psi |
| 2 bar | 29.0075 psi |
| 2.2 bar | 31.9083 psi |
| 2.5 bar | 36.2594 psi |
| 3 bar | 43.5113 psi |
| 3.5 bar | 50.7632 psi |
| 4 bar | 58.0151 psi |
| 5 bar | 72.5189 psi |
| 6 bar | 87.0226 psi |
| 8 bar | 116.03 psi |
| 10 bar | 145.038 psi |
| 15 bar | 217.557 psi |
| 20 bar | 290.075 psi |
| 50 bar | 725.189 psi |
| 100 bar | 1,450.38 psi |
| 200 bar | 2,900.75 psi |
| 300 bar | 4,351.13 psi |
What is a bar?
The bar equals 100,000 pascals, very close to the atmospheric pressure at sea level. Europeans inflate car tires to about 2.2 to 2.5 bar, an espresso machine brews at around 9 bar and a full scuba tank holds about 200 bar.
What is a pound per square inch?
The pound per square inch is the US unit of pressure, about 6,894.76 pascals. Car tires are usually inflated to 30 to 35 psi, and sea-level air pressure is 14.7 psi. Gauges often read psig, the pressure above atmospheric.