Bar to PSI Converter
Created by: Sophia Bennett Pressure Systems Specialist
Last updated:
To convert bar to psi, multiply by 14.5038. For example, 2 bar is 29.0 psi, 2.2 bar is 31.9 psi and 350 bar is 5,076 psi. To go from psi to bar, divide by 14.5038: 35 psi is 2.41 bar. Use the converter in either direction, or look up common pressures in the chart.
Bar to PSI Converter
Conversion1 bar = 14.5038 psi. Switch direction to convert psi to bar.
Bar to psi conversion chart
psi = bar × 14.5038. bar = psi × 0.0689476.
| Bar (bar) | PSI (psi) |
|---|---|
| 0.5 bar | 7.2519 psi |
| 1 bar | 14.5038 psi |
| 1.5 bar | 21.7557 psi |
| 1.8 bar | 26.1068 psi |
| 2 bar | 29.0075 psi |
| 2.1 bar | 30.4579 psi |
| 2.2 bar | 31.9083 psi |
| 2.3 bar | 33.3587 psi |
| 2.4 bar | 34.8091 psi |
| 2.5 bar | 36.2594 psi |
| 2.8 bar | 40.6106 psi |
| 3 bar | 43.5113 psi |
| 3.5 bar | 50.7632 psi |
| 4 bar | 58.0151 psi |
| 5 bar | 72.5189 psi |
| 6 bar | 87.0226 psi |
| 7 bar | 101.5264 psi |
| 8 bar | 116.0302 psi |
| 10 bar | 145.0377 psi |
| 15 bar | 217.5566 psi |
| 20 bar | 290.0755 psi |
| 26 bar | 377.0981 psi |
| 50 bar | 725.1887 psi |
| 100 bar | 1,450.38 psi |
| 150 bar | 2,175.57 psi |
| 200 bar | 2,900.75 psi |
| 250 bar | 3,625.94 psi |
| 300 bar | 4,351.13 psi |
| 350 bar | 5,076.32 psi |
| 700 bar | 10,152.64 psi |
| PSI (psi) | Bar (bar) |
|---|---|
| 10 psi | 0.6895 bar |
| 15 psi | 1.0342 bar |
| 20 psi | 1.379 bar |
| 25 psi | 1.7237 bar |
| 28 psi | 1.9305 bar |
| 30 psi | 2.0684 bar |
| 32 psi | 2.2063 bar |
| 33 psi | 2.2753 bar |
| 35 psi | 2.4132 bar |
| 36 psi | 2.4821 bar |
| 40 psi | 2.7579 bar |
| 45 psi | 3.1026 bar |
| 50 psi | 3.4474 bar |
| 60 psi | 4.1369 bar |
| 80 psi | 5.5158 bar |
| 100 psi | 6.8948 bar |
| 120 psi | 8.2737 bar |
| 150 psi | 10.3421 bar |
| 200 psi | 13.7895 bar |
| 500 psi | 34.4738 bar |
| 1,000 psi | 68.9476 bar |
| 3,000 psi | 206.8427 bar |
| 5,000 psi | 344.7379 bar |
How to convert bar to psi
psi = bar × 14.5038
bar = psi ÷ 14.5038
The factor comes from the definitions: 1 bar is exactly 100,000 Pa and 1 psi is 6,894.757 Pa, so 100,000 ÷ 6,894.757 = 14.5038. For quick mental math, 14.5 is close enough for tire pressures.
Typical pressures
- Car tires: about 2.0 to 2.5 bar (29 to 36 psi). Check the placard in the driver’s door jamb.
- Road bike tires: about 5 to 8 bar (73 to 116 psi).
- Home water supply: about 3 to 5 bar (44 to 73 psi).
- Espresso machines: about 9 bar (131 psi) at the group head.
- Scuba tanks: about 200 to 300 bar (2,900 to 4,350 psi) when full.
Frequently Asked Questions
How do I convert bar to psi?
Multiply bar by 14.504. 2 bar × 14.504 = 29.0 psi and 2.2 bar = 31.9 psi. To convert psi to bar, divide by 14.504 (or multiply by 0.06895).
What is the difference between bar and psi?
Both measure pressure. One bar is 100,000 pascals, roughly the air pressure at sea level. One psi is the pressure of one pound-force on one square inch, about 6,895 pascals. A bar is about 14.5 times larger than a psi.
What is 2.2 bar in psi?
2.2 bar is 31.9 psi, a common front tire pressure for small and midsize cars. 2.5 bar is 36.3 psi.
What is 35 psi in bar?
35 psi ÷ 14.504 = 2.41 bar. 30 psi is 2.07 bar and 32 psi is 2.21 bar.
How many psi is 350 bar?
350 bar is 5,076 psi, the pressure used in many hydrogen fuel tanks and some hydraulic systems.
Is tire pressure in bar gauge or absolute pressure?
Gauge. Tire gauges and compressors read pressure above the surrounding air, so a tire at 2.2 bar on the gauge is about 3.2 bar absolute at sea level. Convert gauge to gauge and the factor is the same.
Sources and References
- NIST Special Publication 811, Guide for the Use of the International System of Units. Appendix B: 1 bar = 1 × 10⁵ Pa; 1 psi = 6.894 757 × 10³ Pa.