This bar to psi conversion calculator converts pressure between bar, pound-force per square inch (psi), and pascals, with a direct two-way conversion.
Conversion
bar to psi Conversion
Convert pressure between bar and psi.
Calculator
About this calculator
Formula notes
1 bar = 100,000 Pa; 1 psi ≈ 6,894.757 Pa, so psi = bar × 100,000 / 6894.75728.
Worked examples
- Example: 3 bar equals approximately 43.51 psi (3 × 100000 / 6894.757).
- A tire gauge reading of 2.4 bar is approximately 34.81 psi.
How to use it
- Enter a value in bar or psi.
- Leave the other pressure field empty so the converter derives it.
- Read the equivalent pressure and the corresponding base pressure in pascals.
Frequently asked questions
Can I use this converter for tire pressure?
Yes. Tire pressures are often quoted in either bar or psi; the converter handles both directions.
Why do I get a slightly different result than a gauge?
Gauges have calibration tolerances, and the conversion uses exact unit definitions; small differences are usually from the gauge.
Limits and interpretation
- Pressure unit conversions are exact, but gauges have calibration tolerances and measured values depend on temperature.
- This tool converts pressure units only; it does not diagnose tire pressure safety.