To manually calculate your GPA, divide your total quality points by your total GPA hours.
Use the table below to determine quality points for each letter grade for each course.
Multiply grade quality points by course hours.
Divide by the total number of hours.
Please see your advisor regarding calculcations regarding repeat courses and courses taken under Academic Forgiveness, Academic Fresh Start, Academic Amnesty, etc.
"W" grades have no affect on GPA.
Another tool you may find helpful is Universities of Maryland's Grade Calculator. It can help you determine what you need to make to achieve your desired GPA. You will enter your number of attempted GPA hours, your current GPA and your desired GPA.