Tire Pressure Conversion Chart: PSI to Bar and kPa
Convert tire pressure between PSI, bar, and kPa for cars, motorcycles, and bicycles, covering 15 to 120 PSI.
Bar: 1.03
Tire Pressure Conversion Chart: PSI to Bar and kPa
PSI
Bar
kPa
15
1.03
103.4
20
1.38
137.9
26
1.79
179.3
28
1.93
193.1
30
2.07
206.8
32
2.21
220.6
33
2.28
227.5
35
2.41
241.3
36
2.48
248.2
38
2.62
262
40
2.76
275.8
42
2.9
289.6
44
3.03
303.4
45
3.1
310.3
50
3.45
344.7
60
4.14
413.7
65
4.48
448.2
80
5.52
551.6
100
6.89
689.5
120
8.27
827.4
How to Measure
Check the driver's door jamb sticker or owner's manual for your vehicle's recommended tire pressure, then find that PSI value in the table to read its bar or kPa equivalent. For a PSI value not listed, multiply it by 0.0689476 for bar or by 6.89476 for kPa.
Notes
European and Asian vehicles often list recommended pressure in bar or kPa instead of PSI, so check which unit your gauge reads before inflating. Use the [Pressure converter]({/pressure/}) for an exact value not shown here.
Frequently Asked Questions
Many vehicles built for European or Asian markets specify pressure in bar or kPa on the door jamb sticker, while US gauges read in PSI. Multiply bar by 14.5038 to get PSI, or use the Bar to PSI converter for exact values.
Most passenger car tires run 30 to 35 PSI, about 2.1 to 2.4 bar. Check your vehicle's door jamb sticker for the exact number; the figure molded into the tire's sidewall is the tire's maximum rating, not the recommended pressure.
Road bike tires run 80 to 120 PSI because their narrow contact patch needs higher pressure to support a rider without excess rolling resistance. Mountain bike tires run lower, often 25 to 50 PSI, for grip and cushioning on rough terrain.
No. That number is the tire's maximum safe pressure, not the recommended one. Use the manufacturer's recommended PSI from the door jamb sticker; they set it for ride quality, handling, and even tread wear, not the tire's structural limit.
Source: NIST SP 811, Table B.8 · see our methodology