Grade Calculator
Calculate your weighted average grade.
Enter scores and their weights to get your overall grade with letter grade conversion.
Your Grade
Weighted average is calculated by multiplying each score by its weight, summing the results, and dividing by the total weight.
Weighted Average = Σ(Score × Weight) / Σ(Weight)
Example:
- Homework: 85% (weight: 20%) → 85 × 0.20 = 17.0
- Midterm: 78% (weight: 30%) → 78 × 0.30 = 23.4
- Final: 92% (weight: 50%) → 92 × 0.50 = 46.0
- Weighted Average = 17.0 + 23.4 + 46.0 = 86.4%
Standard letter grade scale:
- A: 90–100%
- B: 80–89%
- C: 70–79%
- D: 60–69%
- F: Below 60%
Tips:
- Enter each assignment, exam, or category with its percentage score and weight
- Weights should add up to 100, but the calculator will normalize if they don’t
- Use this to figure out what you need on a final exam to hit your target grade