College GPA Calculator is a must for college students trying to predict their future GPA. Is your goal to graduate Cum Laude, Magna Cum Laude or Summa Cum Laude? College GPA allows you to plug in anticipated grades for future terms, then performs the GPA calculation for you. Not sure what will happen to your GPA if you get a "C" in Organic Chemistry? Plug in your best case and worst case grade scenarios and see what will happen!