How is cumulative GPA recalculated with new grades?

Cumulative GPA is total quality points divided by total credit hours. The tool converts your current GPA and prior credits into prior quality points (GPA * credits), adds the new semester's quality points (grade point * credits per course), then divides the combined points by the combined credits.

What grade points does the tool use?

The standard US 4.0 scale: A=4.0, A-=3.7, B+=3.3, B=3.0, B-=2.7, C+=2.3, C=2.0, C-=1.7, D+=1.3, D=1.0, D-=0.7, F=0.0. Each course's points are its grade point times its credit hours.

Why does one bad grade barely move my cumulative GPA?

The more credits you have already completed, the more inertia your cumulative GPA has. A single new course is a small fraction of your total credits, so it shifts the average only slightly. Early semesters move your GPA much more.

How do I find the GPA I need to reach a target?

Set a target cumulative GPA, multiply by your projected total credits to get the quality points required, subtract your current quality points, and divide by the new credits. This tool shows current totals so you can do that planning.

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Cumulative GPA Calculator

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Cumulative GPA calculation

Your cumulative (overall) GPA summarises every graded credit you have ever taken. After each semester you want to know where you now stand, especially relative to honours thresholds like 3.5 or 3.7. This calculator combines your existing record with a new semester’s courses to produce an updated cumulative GPA.

How it works

GPA is total quality points divided by total credit hours. The tool first reconstructs your prior quality points from your current GPA and prior credits:

priorPoints = currentGPA * priorCredits

Then it adds the new semester. Each new course contributes its grade point times its credits:

newPoints   = sum(gradePoint_i * credits_i)
newCredits  = sum(credits_i)

The updated cumulative GPA is:

cumulativeGPA = (priorPoints + newPoints) / (priorCredits + newCredits)

Courses with no grade or no credits are ignored, and an empty prior record (0 credits) simply gives you this semester’s GPA.

Tips and notes

Use the same grade-point scale your school uses; this tool uses the common US 4.0 scale with plus and minus grades.
Failed courses count as 0.0 quality points but their attempted credits still count in most schemes, which lowers your cumulative GPA.
The larger your prior credit total, the harder it is to move your cumulative GPA, so set realistic semester goals.