Megapascals to gigabars converter on this page calculates how many gigabars are in 'X' megapascals (where 'X' is the number of megapascals to convert to gigabars). In order to convert a value from megapascals to gigabars (from MPa to Gbar) simply type the number of MPa to be converted to Gbar and then click on the 'convert' button.