Bar to PSI & kPa Converter
Convert pressure between bar, PSI and kPa in either direction — handy for tyre pressures and turbo boost readings. Enter a value, choose the unit, and the others update instantly.
Results
Bar
—bar
PSI
—PSI
Kilopascals
—kPa
Enter a pressure value above to see the conversion.
Common tyre pressures
A quick reference for popular cold tyre pressures between 1.5 and 3.5 bar. Always confirm the correct pressure for your vehicle from its placard or handbook.
| bar | PSI | kPa |
|---|---|---|
| 1.5 | 21.8 | 150 |
| 1.8 | 26.1 | 180 |
| 2.0 | 29 | 200 |
| 2.2 | 31.9 | 220 |
| 2.3 | 33.4 | 230 |
| 2.5 | 36.3 | 250 |
| 2.8 | 40.6 | 280 |
| 3.0 | 43.5 | 300 |
| 3.2 | 46.4 | 320 |
| 3.5 | 50.8 | 350 |
How this converter works
The tool converts between three pressure units. Enter one value and choose its unit; the calculator works out the equivalent in the other two.
1 PSI = 6.894757293168 kPa
bar = kPa ÷ 100
PSI = kPa ÷ 6.894757293168
Worked example: 2.2 bar × 100 = 220 kPa, then 220 ÷ 6.894757293168 = 31.91 PSI.
Finding the right tyre pressure
This tool only converts pressure units — it does not recommend a pressure. The correct cold tyre pressure for your car is printed on a placard, usually found on the driver’s door jamb, inside the fuel filler flap, or in the owner’s handbook. Stick to that figure and check pressures when the tyres are cold for the most accurate reading.
Frequently asked questions
Is 1 bar exactly 14.5 PSI?
What is kPa and why do some cars use it?
Should I use bar or PSI for my tyres?
Does boost pressure use the same conversion?
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