Tire Pressure Unit Converter

This converter works by converting a pressure value between pounds per square inch (psi), kilopascals (kPa), bar and kg/cm². It handles car, truck and bicycle pressures.

1. Enter a value, for example 35 psi.
2. Read kPa: 241 kPa.
3. Read bar: 2.41 bar.
4. Read kg/cm²: 2.46 kg/cm².

The formula is kPa = psi × 6.89476. The other units follow from kPa.

Worked example: 2.5 bar is 250 kPa, which is 36.3 psi.

The conversion table converts 14 pressures from 26 psi to 80 psi into kPa, bar and kg/cm². The list covers passenger cars (30–36 psi), XL tires (42 psi) and LT load ranges C, D and E (50, 65 and 80 psi).

1 bar is 14.5 psi. 1 kg/cm² is 14.2 psi; Japanese and older European gauges use that unit.

The Tire Pressure Unit Converter is a tool that converts tire inflation pressure between the 4 units used on gauges and placards worldwide. US placards use psi; European and Asian placards use kPa or bar.

Gauges, compressors and tire pressure monitoring systems (TPMS) can be switched between units, but placards cannot. The converter prevents mistakes when the gauge and placard use different units.

This converter has 4 uses: placard reading, gauge setup, travel abroad and data-sheet reading.

• Read placards: Convert a kPa placard to psi.
• Set up gauges: Match the gauge unit to the placard.
• Travel abroad: Use foreign air pumps correctly.
• Read data sheets: Convert load table pressures.