Gigapascals to kips per square inch converter on this page calculates how many kips per square inch are in 'X' gigapascals (where 'X' is the number of gigapascals to convert to kips per square inch). In order to convert a value from gigapascals to kips per square inch (from GPa to ksi) simply type the number of GPa to be converted to ksi and then click on the 'convert' button.