GPA Calculator
Enter each course, select your letter grade, and add the credit hours. This calculator uses a standard 4.0 GPA scale with plus/minus grading.
How to Calculate GPA (Step-by-Step)
GPA stands for Grade Point Average. It is a single number that summarizes your academic performance across classes. Schools usually calculate GPA on a 4.0 scale, where higher grades are worth more points.
Quick Formula
GPA = Total Quality Points / Total Credit Hours
Quality points are found by multiplying the grade points for each class by that class's credits.
Grade Point Values on a 4.0 Scale
- A+, 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
Manual GPA Example
Suppose you completed these courses:
- Biology: A- (3.7) for 4 credits → 14.8 quality points
- History: B+ (3.3) for 3 credits → 9.9 quality points
- Math: B (3.0) for 3 credits → 9.0 quality points
- English: A (4.0) for 3 credits → 12.0 quality points
Total quality points = 14.8 + 9.9 + 9.0 + 12.0 = 45.7
Total credits = 4 + 3 + 3 + 3 = 13
GPA = 45.7 / 13 = 3.52
Semester GPA vs. Cumulative GPA
Semester GPA
Uses only the classes taken in one term.
Cumulative GPA
Uses all classes taken across all terms. To update cumulative GPA, combine previous total quality points with current quality points, then divide by total credits attempted.
Weighted vs. Unweighted GPA
Some high schools use weighted GPA, giving extra points for honors/AP/IB courses. For example, an A in an AP class may be 5.0 instead of 4.0. Colleges often review both your weighted GPA and course rigor, so check your school's policy carefully.
Common GPA Calculation Mistakes
- Treating all classes equally even when credits are different.
- Forgetting plus/minus grade differences.
- Including pass/fail classes that do not affect GPA.
- Using the wrong grading scale for your school.
Tips to Improve Your GPA
- Focus first on high-credit courses because they impact GPA more.
- Use office hours and tutoring early in the semester.
- Track grades weekly so there are no surprises.
- Retake low-grade courses if your school allows grade replacement.
Final Thoughts
If you have ever asked, "How do I find my GPA quickly and accurately?" the key is simple: convert grades to points, multiply by credits, add everything, and divide by total credits. Use the calculator above to save time and avoid errors in your semester or cumulative GPA planning.