Quick Answer
- psi to kPa: multiply by 6.895. 32 psi = 220.6 kPa, 35 psi = 241.3 kPa, 36 psi = 248.2 kPa. 35 psi is 2.41 bar.
- A tire gauge reads gauge pressure (psig), so the same factor applies. 1 bar = 100 kPa = 14.504 psi.
- Use the pressure on your door-jamb placard or in the owner's manual, and measure when the tires are cold (NHTSA: not driven for at least three hours).
Type in any box and the other two update. Tire pressure is gauge pressure, so the same factor applies to kPag.
35 psi in kPa
241.3
241.317 kPa
In bar
2.41
0.2413 MPa
In atmospheres
2.382
241,317 Pa
Working
kPa = psi x 6.894757 = 35 x 6.894757 = 241.317
Factor from NIST SP 811. Owner's manuals round the psi figure, so a manual can print a slightly different number than the exact conversion.
Get a plain-English explanation of your results and what they mean for your vehicle.
PSI to kPa Chart for Tire Pressure: 20 to 60 PSI
Every psi converted with 1 psi = 6.894757 kPa.
| PSI | kPa | Bar |
|---|---|---|
| 20 | 137.9 | 1.38 |
| 21 | 144.8 | 1.45 |
| 22 | 151.7 | 1.52 |
| 23 | 158.6 | 1.59 |
| 24 | 165.5 | 1.65 |
| 25 | 172.4 | 1.72 |
| 26 | 179.3 | 1.79 |
| 27 | 186.2 | 1.86 |
| 28 | 193.1 | 1.93 |
| 29 | 199.9 | 2.00 |
| 30 | 206.8 | 2.07 |
| 31 | 213.7 | 2.14 |
| 32 | 220.6 | 2.21 |
| 33 | 227.5 | 2.28 |
| PSI | kPa | Bar |
|---|---|---|
| 34 | 234.4 | 2.34 |
| 35 | 241.3 | 2.41 |
| 36 | 248.2 | 2.48 |
| 37 | 255.1 | 2.55 |
| 38 | 262.0 | 2.62 |
| 39 | 268.9 | 2.69 |
| 40 | 275.8 | 2.76 |
| 41 | 282.7 | 2.83 |
| 42 | 289.6 | 2.90 |
| 43 | 296.5 | 2.96 |
| 44 | 303.4 | 3.03 |
| 45 | 310.3 | 3.10 |
| 46 | 317.2 | 3.17 |
| 47 | 324.1 | 3.24 |
| PSI | kPa | Bar |
|---|---|---|
| 48 | 330.9 | 3.31 |
| 49 | 337.8 | 3.38 |
| 50 | 344.7 | 3.45 |
| 51 | 351.6 | 3.52 |
| 52 | 358.5 | 3.59 |
| 53 | 365.4 | 3.65 |
| 54 | 372.3 | 3.72 |
| 55 | 379.2 | 3.79 |
| 56 | 386.1 | 3.86 |
| 57 | 393.0 | 3.93 |
| 58 | 399.9 | 4.00 |
| 59 | 406.8 | 4.07 |
| 60 | 413.7 | 4.14 |
If the number on your door sticker is already in kilopascals, the kPa to PSI chart and converter goes the other way.
Other PSI to kPa Values
Low and high values for small tires, equipment and compressors.
| PSI | kPa | Bar | MPa |
|---|---|---|---|
| 1 | 6.9 | 0.07 | 0.007 |
| 5 | 34.5 | 0.34 | 0.034 |
| 10 | 68.9 | 0.69 | 0.069 |
| 13 | 89.6 | 0.90 | 0.090 |
| 14 | 96.5 | 0.97 | 0.097 |
| 15 | 103.4 | 1.03 | 0.103 |
| 65 | 448.2 | 4.48 | 0.448 |
| 70 | 482.6 | 4.83 | 0.483 |
| 75 | 517.1 | 5.17 | 0.517 |
| 80 | 551.6 | 5.52 | 0.552 |
| 90 | 620.5 | 6.21 | 0.621 |
| 95 | 655.0 | 6.55 | 0.655 |
| 100 | 689.5 | 6.89 | 0.689 |
| 105 | 723.9 | 7.24 | 0.724 |
| 110 | 758.4 | 7.58 | 0.758 |
| 120 | 827.4 | 8.27 | 0.827 |
| 125 | 861.8 | 8.62 | 0.862 |
| 130 | 896.3 | 8.96 | 0.896 |
| 150 | 1034.2 | 10.34 | 1.034 |
| 175 | 1206.6 | 12.07 | 1.207 |
| 200 | 1379.0 | 13.79 | 1.379 |
| 220 | 1516.8 | 15.17 | 1.517 |
| 230 | 1585.8 | 15.86 | 1.586 |
| 240 | 1654.7 | 16.55 | 1.655 |
| 250 | 1723.7 | 17.24 | 1.724 |
| 300 | 2068.4 | 20.68 | 2.068 |
Michelin Bicycle Tire Pressures in PSI, Bar and kPa
Examples from Michelin's bicycle pressure guide, which gives pressure by rider weight and tire width. Michelin says the pressure recommended by the bicycle or tire manufacturer must be followed in all cases. For cars and motorcycles use the tire placard or the owner's manual.
| Tire | PSI | Bar | kPa (bar x 100) | Notes |
|---|---|---|---|---|
| Road: Michelin Power Cup, 25 mm | 98.7 to 116.1 | 6.8 to 8.0 | 680 to 800 | By rider weight, under 50 kg to over 100 kg |
| Road: Michelin Power Cup TLR, 28 mm | 84.2 to 101.6 | 5.8 to 7.0 | 580 to 700 | By rider weight |
| Gravel / cyclocross, 40 mm | 34.8 to 52.2 | 2.4 to 3.6 | 240 to 360 | By rider weight |
| Mountain bike: Michelin Wild XC, 2.25 in | 26.1 to 30.5 | 1.8 to 2.1 | 180 to 210 | By rider weight |
| Kids bicycle | 29 | 2.0 | 200 | Michelin: regardless of rider weight or tire width |
Source: Michelin bicycle tire pressure guide (michelinman.com). For inflation questions beyond the unit, the tire pressure calculator and the tire air volume calculator cover more.
PSI to kPa Formula, psig and psia
PSI to kPa
kPa = psi x 6.894757. For 35 psi: 35 x 6.894757 = 241.3 kPa.
kPa to PSI
psi = kPa / 6.894757. For 240 kPa: 240 / 6.894757 = 34.81 psi.
PSI to bar
bar = psi x 0.068948. For 35 psi: 2.41 bar. 1 bar = 100 kPa = 14.504 psi.
psig and psia
psig is gauge pressure, the pressure above the surrounding air, which is what tire gauges read. psia is absolute pressure and includes about 14.696 psi (101.325 kPa) of atmosphere. Convert both with the same factor, then subtract 101.325 kPa from an absolute result to get gauge.
Quick estimate
Multiply psi by 7 for a rough kPa figure (35 x 7 = 245), or by 6.9 for a close one (35 x 6.9 = 241.5).
Source: NIST Special Publication 811, Appendix B.9 (pound-force per square inch = 6.894 757 kPa).
How to Use the PSI to kPa Converter
- 1Type the pressure in psi, kPa or bar. The other two boxes update as you type.
- 2Tap a preset such as 35 psi to load a common tire pressure and read the kPa and bar values below.
- 3Find your value in the chart if you prefer a lookup, then compare it with the pressure on your tire placard.
- 4If your gauge shows a different unit from your placard, convert once and inflate to the placard value.