What Is a Grade Calculator?
This grade calculator finds your overall weighted grade percentage across multiple assignments, tests, and categories — accounting for how much each item is worth toward your final grade.
How to Use the Grade Calculator
- Enter each assignment's name, your score, the total possible points, and its weight (if categories are weighted differently).
- Add as many assignments as needed.
- View your overall weighted grade percentage and letter grade.
Weighted Grade Formula
Worked Example
Homework: 90/100 (weight 20%)
Midterm: 85/100 (weight 30%)
Final Exam: 78/100 (weight 50%)
Weighted grade: (90×0.20 + 85×0.30 + 78×0.50) = 18+25.5+39 = 82.5%
Understanding Your Results
Overall Grade reflects how each assignment's weight affects your final percentage — a lower score on a high-weight item (like a final exam) impacts your grade more than the same score on a low-weight item (like a quiz).
Tips for Using Weighted Grades
- Check your syllabus for exact category weights — they vary significantly by course and instructor.
- If weights don't add up to 100%, this calculator still works correctly since it normalizes by total weight.
- Use this calculator to figure out what score you need on a remaining assignment to reach a target overall grade.
Common Mistakes to Avoid
- Averaging raw percentages without weighting when categories have different point values.
- Forgetting to include all assignments, which skews the overall calculation.
- Using outdated weights if your instructor changes the grading breakdown during the term.
Frequently Asked Questions
Multiply each assignment's percentage score by its weight, sum all these weighted values, then divide by the total weight (usually 100% if weights sum correctly).
This calculator normalizes by the total weight you enter, so it still produces an accurate weighted average even if your weights sum to something other than 100.
Enter your current assignments and their weights, then experiment with different scores for the remaining assignment until you reach your target overall grade.
Grading scales vary by school and instructor — this calculator uses a common standard scale, but always check your specific course's grading scale, which may differ.
Yes — enter any combination of individual assignments, tests, or category averages, weighted according to your course's specific grading breakdown.