Pressure
Tire Pressure Converter
Convert tire pressure between psi, bar, kPa, and mmHg. Use the pressure printed on the vehicle placard or tire guide, usually checked cold.
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How to use this calculator
- Enter the values the calculator asks for.
- Check the instant result and alternate values below it.
- Use the chart and formula to verify common examples.
tire pressure converter chart
| Tire pressure | bar | kPa | mmHg |
|---|---|---|---|
| 28 psi | 1.9305 bar | 193.05 kPa | 1,448.02 mmHg |
| 30 psi | 2.0684 bar | 206.84 kPa | 1,551.45 mmHg |
| 32 psi | 2.2063 bar | 220.63 kPa | 1,654.88 mmHg |
| 35 psi | 2.4132 bar | 241.32 kPa | 1,810.02 mmHg |
| 36 psi | 2.4821 bar | 248.21 kPa | 1,861.74 mmHg |
| 40 psi | 2.7579 bar | 275.79 kPa | 2,068.6 mmHg |
| 44 psi | 3.0337 bar | 303.37 kPa | 2,275.46 mmHg |
Formula
bar = psi x 0.0689476; kPa = psi x 6.89476
Source
Pressure units derived from pascal relationships and fixed conventional factors.
Common questions
How does the Tire Pressure Converter work?
Convert tire pressure between psi, bar, kPa, and mmHg. Use the pressure printed on the vehicle placard or tire guide, usually checked cold.
What formula does this calculator use?
bar = psi x 0.0689476; kPa = psi x 6.89476
Is the result exact?
Pressure units derived from pascal relationships and fixed conventional factors. Some displayed values are rounded for readability, but the calculator keeps more precision internally.