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