PSI to Bar Converter
Divide psi by about 14.5038 to get bar (1 psi ≈ 0.0689 bar).
Formula
1 psi = 0.0689475729 bar
bar = pounds per square inch ÷ 14.503773773
Worked example
Convert 35 pounds per square inch to bar
- Divide by 14.503773773
- 35 ÷ 14.503773773 = 2.41317
35 psi = 2.41317 bar
Good to know
Car tire pressures of 30–35 psi are about 2.1–2.4 bar; road-bike tires at 80–100 psi are 5.5–6.9 bar. Tire gauges and the placard on a car’s door frame usually show both units. Tire and compressor pressures are normally gauge pressures — the pressure above the surrounding atmosphere — in either unit.
Conversion table
| Pounds per square inch (psi) | Bar (bar) |
|---|---|
| 1 | 0.0689476 |
| 5 | 0.344738 |
| 10 | 0.689476 |
| 14.5 | 0.99974 |
| 20 | 1.37895 |
| 25 | 1.72369 |
| 28 | 1.93053 |
| 30 | 2.06843 |
| 32 | 2.20632 |
| 35 | 2.41317 |
| 40 | 2.7579 |
| 50 | 3.44738 |
| 60 | 4.13685 |
| 80 | 5.51581 |
| 100 | 6.89476 |
| 120 | 8.27371 |
| 150 | 10.3421 |
About these units
- Pound per square inch (psi)
- Pound-force per square inch, about 6,894.757 Pa. The usual unit for tire pressure in the US and UK.
- Bar (bar)
- Exactly 100,000 Pa — close to average air pressure at sea level. Common for tire, scuba and pump pressures in Europe.