Bar to Pounds per square inch (bar to psi)
1 bar = 14.503774 psi. Multiply bar by 14.503774; the box below does it both ways.
pounds per square inch
2.1 bar = 30.4579 psi · pounds per square inch to bar page
How to convert bar to pounds per square inch
- Take the value in bar.
- Multiply by 14.503774 (because 1 bar = 14.503774 psi).
- Example: 2.1 bar × 14.503774 = 30.4579 psi.
- Going back: divide by 14.503774, or multiply by 0.06894757.
Where this comes up
Multiply by 14.504. A bike tyre at 2.5 bar is 36 psi; a pressure washer at 100 bar is 1450 psi. 1 bar is close to atmospheric pressure (1.013 bar).
| bar | psi |
|---|---|
| 1 | 14.5038 |
| 1.5 | 21.7557 |
| 2 | 29.0075 |
| 2.1 | 30.4579 |
| 2.2 | 31.9083 |
| 2.3 | 33.3587 |
| 2.4 | 34.8091 |
| 2.5 | 36.2594 |
| 2.8 | 40.6106 |
| 3 | 43.5113 |
| 4 | 58.0151 |
| 5 | 72.5189 |
| 8 | 116.0302 |
| 10 | 145.0377 |
Questions people ask
How many pounds per square inch are in 1 bar?
1 bar = 14.503774 psi. To convert, multiply the bar value by 14.503774.
What is 2.5 bar in psi?
2.5 bar is 36.2594 psi.
How do I convert pounds per square inch back to bar?
Divide by 14.503774, or multiply by 0.06894757: 1 psi = 0.06894757 bar.
More pressure conversions
Pounds per square inch to Bar (psi to bar) · · all converters
Factors are the exact international definitions; last checked 2026-10-10.