Education • Grades
Weighted Grade Calculator
Free online weighted grade calculator with instant client-side calculation, clear formulas, step-by-step examples, and FAQ reference guide.
Direct Answer
To calculate a weighted grade, multiply the average score in each syllabus category by that category's percentage weight, then sum the products: Final Grade = Σ(Category Score × Category Weight) ÷ Total Weight.
| Assignment | Weight % | Score % |
|---|
Final grade
Total weight
0%
Normalized to 100%
Formula: Final = Σ(score × weight /100), normalized if weights ≠100. Letters: A+97 A93 A-90 B+87 B83 B-80 C+77 C73 C-70 D+67 D63 D-60.
How to use
- 1Add each grading category with its weight and your score (0–100).
- 2Weights are normalized automatically if they don't total 100.
- 3See your weighted grade and letter grade, plus the effect of each category.
Formula
Weighted grade = Σ (category score × weight) ÷ Σ weights × 100| Variable | Name | Meaning & Example |
|---|---|---|
| Score_i | Category Score | Average percentage earned in category (85%) |
| Weight_i | Category Weight | Syllabus weight percentage for category (30%) |
Each category score is multiplied by its weight and summed, then divided by the total weight. The result is the weighted average — the number your teacher uses for the final grade when categories carry different importance.
Examples
Homework 88 (30%), Midterm 74 (30%), Final 92 (40%)
(88×0.30 + 74×0.30 + 92×0.40) → (26.4 + 22.2 + 36.8).
85.4% — B