Pressure
kPa to psi Converter
Kilopascals and pounds per square inch, both directions. 1 psi = 6.894757 kPa.
How to convert kPa to psi
Kilopascals (kPa) and pounds per square inch (psi) are both units of pressure. The exact relationship is 1 psi = 6.894757 kPa, which gives two simple formulas:
- psi = kPa ÷ 6.894757
- kPa = psi × 6.894757
So 100 kPa ÷ 6.894757 = 14.504 psi, and a 32 psi tire is 32 × 6.894757 ≈ 220.6 kPa. This converter works in both directions — edit either box above and the other updates instantly, while the bar shows where you sit on a 0–300 kPa scale.
kPa to psi conversion table
Pressure is the unit most likely to differ between a car's door-jamb sticker and a digital gauge, so these common values cover everyday tire and equipment checks:
| Kilopascals (kPa) | PSI | Bar |
|---|---|---|
| 50 kPa | 7.252 psi | 0.5 bar |
| 100 kPa | 14.504 psi | 1 bar |
| 150 kPa | 21.756 psi | 1.5 bar |
| 200 kPa | 29.008 psi | 2 bar |
| 220 kPa | 31.908 psi | 2.2 bar |
| 250 kPa | 36.260 psi | 2.5 bar |
| 300 kPa | 43.511 psi | 3 bar |
kPa, psi and bar in everyday use
Most modern cars print recommended tire pressure in kPa or bar, while many tire gauges and US equipment read in psi — which is why a quick conversion is so handy. Remember that 1 bar equals exactly 100 kilopascals (about 14.5 psi), so the three units form a neat chain. For a fast mental estimate, divide kPa by 7 to approximate psi.
Frequently asked questions
How many psi is 100 kPa?
100 kPa equals 14.504 psi, because psi = kPa ÷ 6.894757. That is also exactly 1 bar.
What is the formula to convert kPa to psi?
Divide kilopascals by 6.894757: psi = kPa ÷ 6.894757. To convert psi to kPa, multiply by 6.894757.
What is the correct tire pressure in kPa?
Most passenger cars call for roughly 220–250 kPa (about 32–36 psi, or 2.2–2.5 bar). Always check the sticker inside your driver's door for the exact figure.
Is 1 bar the same as 100 kPa?
Yes. 1 bar = 100 kilopascals = 14.504 psi. Bar and kPa differ only by a factor of 100, which makes converting between them straightforward.
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