Psi to bar
1 psi = 0.0689 bar
For any other value: bar = psi × 0.0689475729
Calculator
0.0689 bar
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You can leave the unit in: 100 psi is fine.
Psi to bar chart
The values people look up most.
| psi | bar |
|---|---|
| 1 psi | 0.0689 bar |
| 35 psi | 2.41 bar |
| 100 psi | 6.89 bar |
| 40 psi | 2.76 bar |
| 30 psi | 2.07 bar |
| 32 psi | 2.21 bar |
| 33 psi | 2.28 bar |
| 3000 psi | 206.84 bar |
| 60 psi | 4.14 bar |
| 50 psi | 3.45 bar |
| 150 psi | 10.34 bar |
| 36 psi | 2.48 bar |
| 10 psi | 0.689 bar |
| 15 psi | 1.03 bar |
| 20 psi | 1.38 bar |
| 80 psi | 5.52 bar |
| 1000 psi | 68.95 bar |
| 300 psi | 20.68 bar |
| 200 psi | 13.79 bar |
| 25 psi | 1.72 bar |
| 42 psi | 2.9 bar |
| 500 psi | 34.47 bar |
| 90 psi | 6.21 bar |
| 120 psi | 8.27 bar |
| 2000 psi | 137.9 bar |
| 45 psi | 3.1 bar |
| 38 psi | 2.62 bar |
| 5000 psi | 344.74 bar |
| 70 psi | 4.83 bar |
| 400 psi | 27.58 bar |
Formula
bar = psi × 0.0689475729
Car tyres usually run at 2 to 2.5 bar, which is 29.01 to 36.26 psi.
Where this number comes from
A bar is exactly 100,000 Pa; psi derives from the pound-force and the inch.
Source: NIST Guide to the SI, Appendix B: Conversion Factors, NIST (National Institute of Standards and Technology, USA).
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