Find out the grade scale for your college. Most colleges use 4.0, 3.0, 2.0, 1.0, 0.0 for "A," "B," "C," "D" and "F," but there may be slight differences with minuses and pluses, such as "A+" or "B-." Call your college's student help desk to find out the specific grade scale.
Multiply each numeric grade by the number of credit for the class. This will calculate the number of quality points obtained from the course. For an "F," you will usually have no quality points assessed for that class.
Add all the quality points together.
Add all the credits together, including those from failed classes.
Divide the total quality points by the total credits to calculate GPA.