How to convert kilopascals to pounds per square inch
- Take the value in kilopascals.
- Use the formula pounds per square inch = kilopascals × 0.1450377377.
- For example, 220 kPa is 31.91 psi.
About kilopascals and pounds per square inch
One kilopascal is 0.145038 psi. Multiply kPa by 0.145038, or divide by 6.89476, to get psi. Dividing by 7 gives a fast estimate that is about 1.5% low.
Cars sold outside the US often list tire pressures in kPa, while many gauges and air pumps only show psi. Weather maps work in hectopascals, and 10 hPa is 1 kPa.
Examples
- 220 kPa (a typical car tire pressure) is 31.91 psi
- 101.33 kPa (standard air pressure at sea level) is 14.7 psi
- 33.7 kPa (air pressure on the summit of Mount Everest) is 4.89 psi
- 100 kPa (one bar) is 14.5 psi
Kilopascals to pounds per square inch chart
| Kilopascals (kPa) | Pounds per square inch (psi) |
|---|---|
| 1 | 0.145 |
| 10 | 1.45 |
| 20 | 2.9 |
| 50 | 7.25 |
| 100 | 14.5 |
| 101.33 | 14.7 |
| 150 | 21.76 |
| 180 | 26.11 |
| 200 | 29.01 |
| 210 | 30.46 |
| 220 | 31.91 |
| Kilopascals (kPa) | Pounds per square inch (psi) |
|---|---|
| 230 | 33.36 |
| 240 | 34.81 |
| 250 | 36.26 |
| 260 | 37.71 |
| 280 | 40.61 |
| 300 | 43.51 |
| 350 | 50.76 |
| 400 | 58.02 |
| 500 | 72.52 |
| 700 | 101.53 |
| 1,000 | 145.04 |