Gigabars to kips per square inch conversion calculator shown above calculates how many kips per square inch are in 'X' gigabars (where 'X' is the number of gigabars to convert to kips per square inch). In order to convert a value from gigabars to kips per square inch (from Gbar to ksi) just type the number of Gbar to be converted to ksi and then click on the 'convert' button.