PSI to Bar Converter (psi to bar)

How to use this calculator: psi to bar

1. 1Enter the value measured in psi (psi).
2. 2Confirm the direction is PSI (psi) to Bar (bar); reversing the units changes the factor or offset.
3. 3Apply bar = psi × 0.0689476. The live converter performs this substitution as you type.
4. 4Read the answer in bar and keep only justified precision.

Conversion formula

PSI (pounds per square inch) is the common pressure unit in the US, while bar is used across Europe and Asia. One bar equals 14.5038 psi, so divide psi by 14.5038 to get bar — the conversion used for tyre, compressor and hydraulic pressures.

The units measure the same quantity at different scales: 1 psi = 0.0689476 bar, and 1 bar = 14.50376808 psi.

Worked conversion example: PSI to Bar

1. Given: 20 psi
2. Substitute: bar = 20 × 0.0689476 = 1.378952
3. Result: 20 psi = 1.378952 bar

Accuracy checklist

The converter keeps extra precision internally. Report only the precision supported by the original measurement and follow the required rounding rule.

Direction check: a smaller unit usually gives a larger number; temperature is an exception.

Unit definitions and SI traceability: NIST Office of Weights and Measures — SI Units.