Bars to pound per square inch conversion table shows the most common values for the quick reference. Alternatively, you may use the converter below to convert any other values. 1 Bar = 14.5037738 Psi. Bar is the atmospheric pressure at the sea level. Psi is 1 pound of force per square inch. For other pressure unit conversions, please go to Pressure Conversion. Converter. Enter a value that you want to convert into psi and click on the convert button.