Weighted Grade Calculator
Enter your categories and their weights to get your current course grade
Your weights add up to 60%, not 100%. This is your average over the 60% that is graded so far — the usual mid-semester situation. It is not your final course grade, because the remaining 40% hasn’t happened yet. Counting it as zeros would be the pessimistic answer, and it would be wrong.
How each category moves your grade
| Category | Score | Weight | Points contributed |
|---|---|---|---|
| Homework | 95% | 20% | 19.00 |
| Quizzes | 88% | 15% | 13.20 |
| Midterm | 82% | 25% | 20.50 |
Points contributed = score × weight ÷ 100. Add them up and divide by the total weight to get the course grade.
The formula
grade = Σ(score × weight) ÷ Σ(weight)
Dividing by the total weight rather than by 100 is what makes it correct before the semester ends. If you have marks for 60% of the course, dividing by 100 would silently score the other 40% as zero.
Weighted vs points-based
Take two marks: 45/50 on a project and 8/10 on a quiz.
- Points-based: 53 ÷ 60 = 88.3%. The project dominates because it carries five times the points.
- Weighted, 50/50: (90 + 80) ÷ 2 = 85.0%. The quiz counts just as much as the project.
Same marks, three points apart, and the gap widens as the term goes on. Your syllabus says which model applies — look for a category weights table, which means weighted, or a total points figure, which means points-based. For the points model use the full grade calculator.
Where effort actually pays
A category can only move your course grade by its own weight. Twenty extra points in a category worth 10% is worth 2 points overall; the same twenty in a category worth 40% is worth 8. Before revising, check the weight — the “points contributed” column above ranks your categories by how much they are really moving the number.
Related Calculators
Frequently Asked Questions
How do you calculate a weighted grade?
Multiply each category average by its weight, add those up, then divide by the total weight. Homework 95 at 20%, exams 82 at 50% and projects 88 at 30% gives 0.20×95 + 0.50×82 + 0.30×88 = 86.4%.
What if my weights do not add up to 100%?
That is normal mid-semester — you only have marks for part of the course. This calculator divides by the weight you actually entered, so you get your average over the graded portion. It says so on screen, because treating the ungraded remainder as zeros would report a grade far below reality.
What is the difference between weighted and points-based grading?
In points-based grading every assignment drops its raw points into one pool, so a 100-point exam counts ten times a 10-point quiz. In weighted grading each category has a fixed share no matter how many points it contains. The same marks give different grades under the two systems, so check which one your syllabus uses.
How much is one category actually worth?
A category can only move your grade by its weight. Going from 80 to 100 in a category worth 15% adds 0.15 × 20 = 3 points to your course grade. The table on this page shows each category’s contribution so you can see where effort pays.
Does this handle dropped lowest scores or extra credit?
Not directly — enter the category average you want counted. If your syllabus drops the lowest quiz, work out the quiz average without it and enter that.