Handy Units
Bar to PSIbar → psi
1 bar = 14.5038 psi · 1 psi = 0.0689476 bar
Formula
psi ≈ bar × 14.5038
Example: 2.3 bar = 2.3 × 14.5038 = 33.3587 psi
These units differ only by a fixed factor: multiply by it to convert, divide to go back. The factors are exact international definitions (for example 1 inch = 2.54 cm exactly); results are rounded only for display.
Bar and PSI chart
| Bar (bar) | PSI (psi) |
|---|---|
| 0.5 bar | 7.25189 psi |
| 1 bar | 14.5038 psi |
| 1.8 bar | 26.1068 psi |
| 2 bar | 29.0075 psi |
| 2.2 bar | 31.9083 psi |
| 2.3 bar | 33.3587 psi |
| 2.5 bar | 36.2594 psi |
| 2.8 bar | 40.6106 psi |
| 3 bar | 43.5113 psi |
| 5 bar | 72.5189 psi |
| 10 bar | 145.038 psi |
| PSI (psi) | Bar (bar) |
|---|---|
| 1 psi | 0.0689476 bar |
| 10 psi | 0.689476 bar |
| 20 psi | 1.37895 bar |
| 28 psi | 1.93053 bar |
| 30 psi | 2.06843 bar |
| 32 psi | 2.20632 bar |
| 33 psi | 2.27527 bar |
| 35 psi | 2.41317 bar |
| 36 psi | 2.48211 bar |
| 40 psi | 2.7579 bar |
| 50 psi | 3.44738 bar |
| 100 psi | 6.89476 bar |
About these units
Bar (bar)1 bar = 100 kPa, close to one atmosphere; tire pressure is often given in bar.
Pound per square inch (psi)Pounds per square inch, the US unit for tire pressure: 1 psi ≈ 6.895 kPa.
Questions
How many PSI are in 1 Bar?
1 bar = 14.5038 psi.
How many Bar are in 1 PSI?
1 psi = 0.0689476 bar.
What is a tire pressure of 2.5 bar in psi?
About 36.3 psi (2.5 × 14.5038).