PSI to kPa Converter, you need to use the conversion factor between these two units of pressure: 1 PSI = 6.89476 kPa Conversion Formula To convert a pressure value from PSI to kPa, use the following formula: kPa=PSI×6.89476kPa=PSI×6.89476 Example Conversion Let’s say you want to convert 50 pound per square ...