Convert pounds per square inch to bar
Enter any value to calculate the result instantly.
pounds per square inch to bar formula
Multiply PSI by approximately 0.0689475729. One PSI equals 6,894.757293168 pascals, while one bar equals exactly 100,000 pascals.
Conversion table
Use these reference values for a quick comparison. The calculator above accepts positive, negative, decimal, and large values when they are meaningful for the quantity.
| pounds per square inch | bar |
|---|---|
| 1 PSI | 0.06894757 bar |
| 15 PSI | 1.03421359 bar |
| 30 PSI | 2.06842719 bar |
| 35 PSI | 2.41316505 bar |
| 40 PSI | 2.75790292 bar |
| 100 PSI | 6.89475729 bar |
How to use this converter
Enter the source measurement in the first field. CalUnit applies the displayed formula and updates the destination value immediately. You can use decimals and negative values, copy the result into your work, and compare it with the reference table. Keep the original unit beside the starting measurement so another reader can verify the calculation. For a different unit pair, open the complete pressure conversion guide or the multi-unit pressure converter.
When this conversion is useful
Tire labels may show PSI, bar, and kPa. Use the vehicle manufacturer's cold-tire recommendation and do not substitute the maximum pressure printed on the tire.
Accuracy and rounding
Pressure safety depends on a calibrated gauge and correct gauge-versus-absolute reference. The conversion cannot correct an inaccurate instrument.
Standards references
CalUnit checks physical unit relationships against authoritative measurement references. See the NIST Guide to the SI conversion factors and the BIPM SI Brochure. Regional cooking measures and digital storage conventions are identified separately because their names can represent more than one definition.