Bar to PSI Conversion Chart
Quick-reference chart converting bar to PSI. Covers 0.1–700 bar — for compressed air, hydraulic systems, diving equipment, and industrial applications.
For a custom value not in this chart, use the interactive Bar to Pounds per Square Inch converter.
| Bar (bar) | Pounds per Square Inch (psi) |
|---|---|
| 0.1 bar | 1.45038 psi |
| ½ bar | 7.25189 psi |
| 1 bar | 14.5038 psi |
| 1.5 bar | 21.7557 psi |
| 2 bar | 29.0075 psi |
| 2.5 bar | 36.2594 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 | 101.526 psi |
| 8 bar | 116.03 psi |
| 10 bar | 145.038 psi |
| 15 bar | 217.557 psi |
| 20 bar | 290.075 psi |
| 25 bar | 362.594 psi |
| 50 bar | 725.189 psi |
| 100 bar | 1450.38 psi |
| 200 bar | 2900.75 psi |
| 300 bar | 4351.13 psi |
| 500 bar | 7251.89 psi |
| 700 bar | 10152.6 psi |
Conversion Formula
PSI = bar × 14.5038 bar = PSI × 0.068948 1 bar = 100 kPa = 14.5038 PSI 1 PSI = 0.068948 bar Quick estimate: bar × 14.5 ≈ PSI (within 0.03%) Common reference pressures: 1 bar = 14.50 PSI (approximately 1 atm) 2.0 bar = 29.0 PSI (common European tire pressure) 2.5 bar = 36.3 PSI (higher tire pressure) 3.5 bar = 50.8 PSI (compressed air tools) 10 bar = 145 PSI (water pressure test standard) 200 bar = 2,901 PSI (compressed air cylinder) 300 bar = 4,351 PSI (scuba tank / high-pressure system)
Frequently Asked Questions
How many PSI is 2 bar?
2 bar × 14.5038 = 29.0 PSI. A tire pressure of 2.0 bar is common in European vehicles — equivalent to just over 29 PSI. Many European tire pressure gauges show bar rather than PSI.
How many PSI is 2.5 bar?
2.5 bar × 14.5038 = 36.3 PSI. A common tire pressure for SUVs and performance cars in Europe. At the pump, European gauges displaying bar align to common tire pressures: 2.0–2.7 bar (29–39 PSI).
What is the difference between bar and PSI for everyday use?
Bar and PSI are both common pressure units but dominant in different regions and industries. Bar is favored in Europe, engineering, and industrial settings. PSI is used in the US and British Commonwealth for tire pressure and plumbing. Since 1 bar ≈ 14.5 PSI, it is easy to convert: 2 bar = 29 PSI, 3 bar = 43.5 PSI.
What PSI is a scuba tank at?
A standard aluminum scuba tank is filled to 3,000 PSI (207 bar). Steel tanks may be rated to 3,500 PSI (241 bar). High-pressure technical diving cylinders can reach 4,350 PSI (300 bar). These are the working pressures at which tanks are filled.
How many bar is a car tire?
A typical passenger car tire is inflated to 2.0–2.5 bar (29–36 PSI). Sports cars and loaded vehicles may use 2.7–3.0 bar (39–44 PSI). Always check the vehicle's door-jamb sticker or owner's manual — not the tire sidewall, which shows maximum pressure.
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This chart covers common values. For any number, use the interactive converter.
Use the interactive converter →All conversion values are calculated using internationally recognized conversion factors. Results are provided for general informational purposes — verify critical values independently. Read our full disclaimer.