1 kPa is 0.1450 psi, so a door placard reading 220 kPa means 31.9 psi.
| Kilopascals (kPa) | Pounds per square inch (psi) |
|---|---|
| 10 | 1.5 |
| 20 | 2.9 |
| 30 | 4.4 |
| 40 | 5.8 |
| 50 | 7.3 |
| 60 | 8.7 |
| 70 | 10.2 |
| 80 | 11.6 |
| 90 | 13.1 |
| 100 | 14.5 |
| 110 | 16.0 |
| 120 | 17.4 |
| 130 | 18.9 |
| 140 | 20.3 |
| 150 | 21.8 |
| 160 | 23.2 |
| 170 | 24.7 |
| 180 | 26.1 |
| 190 | 27.6 |
| 200 | 29.0 |
| 210 | 30.5 |
| 220 | 31.9 |
| 230 | 33.4 |
| 240 | 34.8 |
| 250 | 36.3 |
| 260 | 37.7 |
| 270 | 39.2 |
| 280 | 40.6 |
| 290 | 42.1 |
| 300 | 43.5 |
| 310 | 45.0 |
| 320 | 46.4 |
| 330 | 47.9 |
| 340 | 49.3 |
| 350 | 50.8 |
| 360 | 52.2 |
| 370 | 53.7 |
| 380 | 55.1 |
| 390 | 56.6 |
| 400 | 58.0 |
How it is computed
psi = kPa × 1,000 ÷ 6,894.757. One psi is one pound-force per square inch, about 6,894.757 Pa, derived from the exact pound and inch.
FAQ
Why do Canadian cars show tire pressure in kPa?+
Canada uses metric units, so placards and many gauges show kPa, often with psi beside it. The table bridges the two.
How do I convert psi to kPa?+
Multiply psi by about 6.895.