Convert PSI, kPa and bar instantly. The numbers below are conversion references only — your vehicle’s correct inflation pressure comes from its manufacturer placard or owner’s manual.
These are unit equivalents, not recommended pressures for a particular vehicle or tire.
| PSI | kPa | bar |
|---|---|---|
| 20 psi | 137.9 kPa | 1.379 bar |
| 25 psi | 172.37 kPa | 1.724 bar |
| 28 psi | 193.05 kPa | 1.931 bar |
| 30 psi | 206.84 kPa | 2.068 bar |
| 32 psi | 220.63 kPa | 2.206 bar |
| 33 psi | 227.53 kPa | 2.275 bar |
| 35 psi | 241.32 kPa | 2.413 bar |
| 36 psi | 248.21 kPa | 2.482 bar |
| 40 psi | 275.79 kPa | 2.758 bar |
| 42 psi | 289.58 kPa | 2.896 bar |
| 45 psi | 310.26 kPa | 3.103 bar |
| 50 psi | 344.74 kPa | 3.447 bar |
| 60 psi | 413.69 kPa | 4.137 bar |
PSI to kPa: kPa = PSI × 6.894757293168
kPa to PSI: PSI = kPa ÷ 6.894757293168
PSI to bar: bar = PSI × 0.06894757293168
bar to PSI: PSI = bar ÷ 0.06894757293168
Tire pressure changes with temperature and driving heats the tires. The manufacturer placard specifies cold inflation pressure. This converter changes units only; it does not determine the correct pressure for a vehicle.
Multiply PSI by approximately 6.894757293. The calculator uses the centralized pressure registry for the same factor.
Multiply PSI by approximately 0.068947573. One bar equals exactly 100,000 pascals.
Use the vehicle manufacturer’s recommended cold tire pressure shown on the Tire and Loading Information label or in the owner’s manual. Front and rear values can differ.
Use the vehicle manufacturer’s placard or owner’s manual for the vehicle target pressure. Tire sidewall markings are not a substitute for the vehicle manufacturer’s recommended cold inflation pressure.
For the NHTSA guidance linked on this page, cold means the vehicle has not been driven for at least three hours.