How to use this calculator
Enter each course grade and its credit hours. Choose the supported letter-grade or percentage input and review the resulting grade points. Include a previous GPA and previous credits only when you want a cumulative result.
Method and interpretation
On the supported 4.0 scale, semester GPA is the sum of grade points multiplied by course credits, divided by total credits. Cumulative GPA combines prior quality points with the current course quality points; the GPA numbers are not simply averaged.
Assumptions and limits
Schools use different mappings for plus/minus grades, repeated courses, pass/fail classes and weighted courses. Match your school rules before treating this as an official GPA. Credits must be positive for included courses; zero prior GPA with positive prior credits is a valid input.
Worked example
For a 3-credit course worth 4.0 points and a 3-credit course worth 3.0 points, quality points are 12 + 9 = 21. Divide by 6 total credits to get a semester GPA of 3.50.