Weighted Grade Calculator
Calculate your weighted grade average across up to 6 assignments or exams.
Set a custom weight for each entry and see your final course grade and letter.
Weighted Grade Calculation accounts for the fact that different assignments, exams, and projects contribute different percentages to your final grade.
Formula:
Weighted Grade = Σ(Grade × Weight) / Σ(Weights)
Where:
- Grade = Your score on each assignment (as a percentage, 0–100)
- Weight = How much that assignment counts toward the final grade (as a percentage)
Step-by-Step:
- Multiply each grade by its weight
- Add up all the products
- Divide by the total of all weights
Common Weighting Schemes:
| Component | Weight (Example 1) | Weight (Example 2) |
|---|---|---|
| Homework | 20% | 15% |
| Quizzes | 15% | 10% |
| Midterm Exam | 25% | 30% |
| Final Exam | 30% | 35% |
| Participation | 10% | 10% |
Practical Example:
- Homework: 92% (weight 20%) → 92 × 20 = 1,840
- Midterm: 78% (weight 30%) → 78 × 30 = 2,340
- Final: 85% (weight 40%) → 85 × 40 = 3,400
- Participation: 95% (weight 10%) → 95 × 10 = 950
Total: (1,840 + 2,340 + 3,400 + 950) / (20 + 30 + 40 + 10) = 8,530 / 100 = 85.3%
Letter Grade Scale (Common US):
| Percentage | Letter |
|---|---|
| 93–100 | A |
| 90–92 | A− |
| 87–89 | B+ |
| 83–86 | B |
| 80–82 | B− |
| 77–79 | C+ |
| 73–76 | C |
| 70–72 | C− |
| 67–69 | D+ |
| 60–66 | D |
| Below 60 | F |
Partway through the course?
Enter only the work that has been graded and leave the rest blank. When the weights come to less than 100%, the percentage shown is your average on the work done so far, and the calculator also works out what you need on everything still outstanding to land on an A−, a B− or a C−. That is usually the more useful number in week ten.
A few things worth knowing:
- Weights that do not reach 100% are fine. The calculator divides by the weight actually entered rather than assuming the missing part is a zero.
- Study time is best spent where the weight is. Ten points gained on a 40% final moves your grade four times as much as ten points on a 10% homework set.
- Some courses grade on points rather than percentages. Convert each assignment to a percentage first, then use the point value as its weight.
How we build and check this calculator
This calculator runs entirely in your browser, so the numbers you enter stay on your device. The math behind it is written by hand and tested against worked examples and standard references before the page goes live.
SuperGlobalCalculator is independently built and maintained. See how we build and verify our calculators.