Tyre pressure converter
The placard says 250 kPa, the forecourt compressor wants bar, the imported gauge reads psi and the old plate on the truck lists kg/cm². Same pressure, four arguments. This settles it.
Converter
Enter a pressure and pick its unit — all four conversions appear.
Quick reference
| kPa | bar | lb/in² | kg/cm² |
|---|---|---|---|
| 100 | 1.0 | 15 | 1.0 |
| 150 | 1.5 | 22 | 1.5 |
| 200 | 2.0 | 29 | 2.0 |
| 250 | 2.5 | 36 | 2.5 |
| 300 | 3.0 | 44 | 3.1 |
| 350 | 3.5 | 51 | 3.6 |
| 400 | 4.0 | 58 | 4.1 |
| 450 | 4.5 | 65 | 4.6 |
| 500 | 5.0 | 73 | 5.1 |
| 550 | 5.5 | 80 | 5.6 |
| 600 | 6.0 | 87 | 6.1 |
| 650 | 6.5 | 94 | 6.6 |
| 700 | 7.0 | 102 | 7.1 |
| 750 | 7.5 | 109 | 7.6 |
| 800 | 8.0 | 116 | 8.2 |
| 850 | 8.5 | 123 | 8.7 |
| 900 | 9.0 | 131 | 9.2 |
| 950 | 9.5 | 138 | 9.7 |
| 1000 | 10.0 | 145 | 10.2 |
| 1050 | 10.5 | 152 | 10.7 |
Which unit is right?
All of them — they're the same pressure in different languages. South African vehicle placards and ETRTO tables work in kPa (1 bar = 100 kPa), most compressors and workshop talk in bar, American kit shows psi, and kg/cm² survives on older plates and gauges.
Rule of thumb for the yard: 2.0 bar ≈ 200 kPa ≈ 29 psi ≈ 2.0 kg/cm². And remember the pressure on the placard is a cold pressure — a tyre checked after the morning's run reads hot and high.
More tools: load index chart, speed ratings and the general unit converter. Reading a sidewall for the first time? Start here.