Grade Point Averages (GPAs) are numbers within a 4.0 GPA system. A 2.8 GPA is therefore equal to a ‘B’ score. You can figure out your Grade Point Average using our grade equivalents program below. Before you know what format to put your scores into, look up your college or university’s reporting guidelines. They may use letters, percentages or GPA. College class grades usually combine actual grades with semester hours and course credits to determine the final grade.