Tire pressure chart (kPa, psi, bar)
Car placards and tire sidewalls give pressure in psi, kPa or bar. Use the converter or read across the chart: 1 psi is 6.8948 kPa and 1 bar is 100 kPa.
kPa to psi tire pressure converter
Convert from
- Pounds per square inchpsi
- Barbar
- PascalsPa
- HectopascalshPa
- KilopascalskPa
- MegapascalsMPa
- Millibarmbar
- Standard atmospheresatm
- Millimetres of mercurymmHg
- TorrTorr
- Inches of mercury (US)inHg
- Inches of water (US)inH₂O
- Kilograms-force per cm²kgf/cm²
- GigapascalsGPa
- Newtons per square millimetreN/mm²
- Kips per square inch (US)ksi
- Pounds-force per square footlbf/ft²
220 kilopascals = 31.908 pounds per square inch
Default is 5 significant figures. “Units typed as” decides what words like gallon, pint or cup mean when you type them. Scientific input such as 1e15 or 2.5e-3 works in the value box; type unit names or a whole conversion in the unit picker’s search.
- 1 kPa = 0.14504 psi
- 5 kPa = 0.72519 psi
- 10 kPa = 1.4504 psi
- 25 kPa = 3.6259 psi
Shortcuts: / value box · S swap · Esc close the picker · Alt+C copy · Alt+L link · Alt+F favourite
| kPa | psi | bar |
|---|---|---|
| 150 | 21.756 | 1.5 |
| 160 | 23.206 | 1.6 |
| 170 | 24.656 | 1.7 |
| 180 | 26.107 | 1.8 |
| 190 | 27.557 | 1.9 |
| 200 | 29.008 | 2 |
| 210 | 30.458 | 2.1 |
| 220 | 31.908 | 2.2 |
| 230 | 33.359 | 2.3 |
| 240 | 34.809 | 2.4 |
| 250 | 36.259 | 2.5 |
| 260 | 37.71 | 2.6 |
| 270 | 39.16 | 2.7 |
| 280 | 40.611 | 2.8 |
| 290 | 42.061 | 2.9 |
| 300 | 43.511 | 3 |
| 310 | 44.962 | 3.1 |
| 320 | 46.412 | 3.2 |
| 330 | 47.862 | 3.3 |
| 340 | 49.313 | 3.4 |
| 350 | 50.763 | 3.5 |
| psi | kPa | bar |
|---|---|---|
| 20 | 137.9 | 1.379 |
| 22 | 151.68 | 1.5168 |
| 24 | 165.47 | 1.6547 |
| 26 | 179.26 | 1.7926 |
| 28 | 193.05 | 1.9305 |
| 30 | 206.84 | 2.0684 |
| 32 | 220.63 | 2.2063 |
| 34 | 234.42 | 2.3442 |
| 36 | 248.21 | 2.4821 |
| 38 | 262 | 2.62 |
| 40 | 275.79 | 2.7579 |
| 42 | 289.58 | 2.8958 |
| 44 | 303.37 | 3.0337 |
| 46 | 317.16 | 3.1716 |
| 48 | 330.95 | 3.3095 |
| 50 | 344.74 | 3.4474 |
Inflate to the pressure on your vehicle’s door-jamb placard or in the owner’s manual, measured with cold tires.
How it’s calculated
psi = kPa ÷ 6.894757 · kPa = psi × 6.894757 · bar = kPa ÷ 100
Step by step: 230 kPa
- 230 ÷ 6.894757 = 33.359 psi.
- 230 ÷ 100 = 2.3 bar.
1 psi is one pound-force on one square inch, 6 894.757 Pa (NIST SP 811). The bar is exactly 100 kPa.
FAQ
Always inflate to the pressure on your vehicle’s door-jamb placard or owner’s manual, not the maximum printed on the tire sidewall, and check pressures when the tires are cold.
What is 220 kPa in psi?
220 kPa ÷ 6.894757 = 31.9 psi, about 32 psi.
What is 35 psi in kPa and bar?
35 psi × 6.894757 = 241.3 kPa, or 2.41 bar.
Is a tire gauge reading absolute or gauge pressure?
Tire gauges read gauge pressure: the pressure above the surrounding air. Charts like this one convert gauge pressure, so no atmospheric correction is needed.
What tire pressure should I use?
Use the figure on the placard in the driver’s door jamb or in the owner’s manual. Most passenger cars specify 30–35 psi (about 205–240 kPa).
Sources
- NIST Special Publication 811 (Guide for the Use of the SI): Conversion factors, including 1 psi = 6.894757 kPa.
Checked by Unitglide on 2026-10-27.