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Convert psi to bar
Instant, accurate psi → bar conversion with a live converter, table and formula.
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1 psi = 0.0689476 bar
1 bar = 14.5038 psi
psi to bar table
| psi (psi) | bar (bar) |
|---|---|
| 0.5 | 0.0344738 |
| 1 | 0.0689476 |
| 2 | 0.137895 |
| 5 | 0.344738 |
| 10 | 0.689476 |
| 20 | 1.37895 |
| 50 | 3.44738 |
| 100 | 6.89476 |
| 500 | 34.4738 |
| 1000 | 68.9476 |
Formula
bar = psi × 0.0689476.
Example
10 psi = 0.689476 bar.
What is a psi?
Pounds per square inch (psi) is the imperial pressure unit (tires, etc.).
What is a bar?
A bar is 100,000 pascals — close to average sea-level air pressure.
Real-world reference points
Sea-level air is ~1 bar (14.7 psi); car tires run ~2.2 bar (32 psi); espresso machines ~9 bar.
| Reference | psi | bar |
|---|---|---|
| Atmosphere (sea level) | 14.7 psi | 1.01 bar |
| Car tire (32 psi) | 32 psi | 2.21 bar |
| Road-bike tire (80 psi) | 80 psi | 5.52 bar |
| Espresso extraction (9 bar) | 131 psi | 9 bar |
Mistakes to avoid with pressure conversions
- Mixing gauge and absolute pressure: tire gauges read pressure ABOVE atmospheric (psig), not absolute (psia).
- Inflating tires to the sidewall maximum instead of the door-jamb recommendation.
- Confusing bar with psi — a 2.2 vs 32 mixup is a dangerous under/over-inflation.
Frequently asked questions
How many bar in a psi?+
1 psi = 0.0689476 bar.
How do I convert psi to bar?+
Enter the value in the psi box above and the bar value appears instantly. You can also type in the bar box to convert the other way.
Is this psi to bar converter free?+
Yes — it is 100% free, needs no sign-up, and runs entirely in your browser.