Tire Pressure Converter
Convert tire pressure between psi, bar, and kPa — the three units used on tire gauges worldwide. US gauges read psi, European ones bar, and Australian/Canadian ones kPa.
Convert between psi, bar, and kPa for tire inflation.
Vehicle Presets
PSI
32
Bar
2.21
kPa
220.63
Note: Always follow your vehicle manufacturer's recommended tire pressure (found on the door jamb or in the owner's handbook). This tool converts units only.
Quick Facts
- •1 psi ≈ 0.0689 bar ≈ 6.895 kPa
- •1 bar = 100 kPa exactly = 14.504 psi
- •Typical car tire pressure: 30–35 psi (2.07–2.41 bar)
- •Check tire pressure when tires are cold for accurate readings
Common Tire Pressure Conversions
| PSI | Bar | kPa |
|---|---|---|
| 28 | 1.93 | 193.1 |
| 30 | 2.07 | 206.8 |
| 32 | 2.21 | 220.6 |
| 33 | 2.28 | 227.5 |
| 35 | 2.41 | 241.3 |
| 36 | 2.48 | 248.2 |
| 40 | 2.76 | 275.8 |
| 44 | 3.03 | 303.4 |
| 50 | 3.45 | 344.7 |
| 80 | 5.52 | 551.6 |
| 100 | 6.89 | 689.5 |
How to Convert PSI to Bar
Multiply the tire pressure in psi by 0.0689476 to get bar. For example, 32 psi × 0.0689476 ≈ 2.21 bar.
Typical Tire Pressure Ranges
| Vehicle | PSI Range | Bar Range |
|---|---|---|
| Passenger Car | 30–35 psi | 2.07–2.41 psi |
| SUV | 32–40 psi | 2.21–2.76 psi |
| Road Bicycle | 80–130 psi | 5.52–8.96 psi |
| Mountain Bike | 25–35 psi | 1.72–2.41 psi |
| Motorcycle | 28–40 psi | 1.93–2.76 psi |
These are general guidelines. Always check your vehicle's specific recommendations.
Worked Examples
32 psi →
32 × 0.0689476 ≈ 2.21 bar = 220.6 kPa
2.2 bar →
2.2 × 14.5038 ≈ 31.91 psi = 220 kPa
250 kPa →
250 ÷ 6.89476 ≈ 36.26 psi = 2.5 bar
Related Converters
Related Converters
Frequently Asked Questions
How do I convert psi to bar for tire pressure?
Multiply psi by 0.0689476. For example, 32 psi × 0.0689476 ≈ 2.21 bar.
How do I convert bar to psi?
Multiply bar by 14.5038. For example, 2.2 bar × 14.5038 ≈ 31.9 psi.
How do I convert kPa to psi?
Multiply kPa by 0.145038. For example, 220 kPa × 0.145038 ≈ 31.9 psi.
How do I convert psi to kPa?
Multiply psi by 6.89476. For example, 32 psi × 6.89476 ≈ 220.6 kPa.
What is the recommended tire pressure for a car?
Most passenger cars: 30–35 psi (2.07–2.41 bar, 207–241 kPa). Always check your vehicle's door jamb or owner's manual.
Does tire pressure change with temperature?
Yes. For every 10°F (5.5°C) change, tire pressure changes by about 1 psi. Check pressure when tires are cold.
Should I use psi, bar, or kPa?
Use whatever unit your tire gauge shows. US gauges typically read psi, European ones bar, Australian/Canadian ones kPa.
What happens if tire pressure is too low or too high?
Under-inflated tires increase fuel consumption and wear unevenly. Over-inflated tires reduce traction and wear the tread center. Check monthly.