Calculate your weighted GPA on a 4.0 scale by adding courses with letter grades and credit hours. Add or remove course rows as needed.
Your GPA
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How It Works
Each letter grade maps to a number of grade points on a 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, and F = 0.0.
For each course, grade points are multiplied by the number of credit hours to get quality points. Your GPA is the total quality points divided by the total credit hours attempted.
Courses with a credit hours value of zero are ignored in the totals, so you can include or exclude rows freely.
Worked example: Biology (4 credits, A = 4.0) gives 16 quality points, English (3 credits, B+ = 3.3) gives 9.9, and History (3 credits, B = 3.0) gives 9.0. Total quality points = 34.9, total credits = 10, so GPA = 34.9 / 10 = 3.49.
Frequently Asked Questions
Does this support plus and minus grades?
Yes. The grade dropdown includes A through F with plus and minus steps, each mapped to the standard 4.0-scale grade points.
How are credits used in the GPA?
Each course contributes grade points times its credit hours. The final GPA weights harder courses (more credits) more heavily, which is how most schools compute GPA.
Can I add or remove courses?
Yes. Use the "Add course" button to add a row and the trash icon on any row to remove it. The GPA updates instantly as you change grades or credits.
What is the difference between weighted and unweighted GPA?
Unweighted GPA caps grade points at 4.0 regardless of course difficulty. Weighted GPA awards extra points for honors, AP, or IB classes (an A might be 5.0), so it can exceed 4.0. This calculator uses the unweighted 4.0 scale.
How do I convert a percentage grade to a letter?
It varies by school, but a common scale is 90–100 = A, 80–89 = B, 70–79 = C, 60–69 = D, and below 60 = F. Check your syllabus for the exact cutoffs, especially for plus/minus grades.
Do failed courses affect my GPA?
Yes. An F earns 0.0 grade points but the credits still count in the denominator, which pulls your GPA down. Retaking a failed course may replace the old grade depending on your school's policy.