Quickly convert tyre (tire) pressure between bar, PSI and kPa. Type a value in any unit and the other two update instantly. Handy when your car’s door-jamb label uses one unit but your pump or gauge uses another.
Tyre & Tire Pressure Converter — bar · PSI · kPa
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1 bar = 14.5038 PSI = 100 kPa. Always set pressures cold (before driving). Use the figure on your car's door-jamb or fuel-flap label, not the maximum stamped on the tyre.
How tyre pressure units relate
The three units measure the same thing in different scales: 1 bar = 14.5038 PSI = 100 kPa. European cars usually quote bar, North American gauges use PSI, and many manufacturers print kPa on the placard. A typical car runs around 2.2–2.5 bar (32–36 PSI / 220–250 kPa).
Frequently asked questions
What is 2.5 bar in PSI?
2.5 bar is about 36.3 PSI (250 kPa). Set it cold.
What is 35 PSI in bar?
35 PSI is about 2.41 bar (241 kPa).
Should I use the pressure on the tyre sidewall?
No — the number moulded into the sidewall is the tyre’s maximum, not the recommended pressure. Use the figure on the door-jamb or fuel-flap label for your car.
Cold or warm — when do I check?
Always cold, before driving. Pressure rises as tyres warm up, so a “warm” reading looks higher than the set value.
Changed to a non-stock tyre size? Recalculate your pressures with our non-stock tyre pressure calculator, and reset your car’s monitor with the TPMS reset guide for your model.