Enter your course components
Results
Current weighted average (graded components): –
Current weighted average after dropping lowest components: –
Completed weight: –
Total defined weight: –
Remaining weight: –
Required average on remaining weight: –
Projected overall course percentage (assumed remaining score): –
Example course grade breakdown
The table below shows how each graded component contributes to the overall course percentage when weights and scores are combined.
| Component | Score | Max score | Weight (%) | Weighted contribution (%) |
|---|---|---|---|---|
| Quizzes | 45 | 50 | 20 | 18.0 |
| Midterm exam | 78 | 100 | 30 | 23.4 |
| Assignments | 80 | 100 | 25 | 20.0 |
| Final exam (projected) | 85 | 100 | 25 | 21.3 |
| Totals | 100 | 82.7 | ||
What is a course weighted average?
A course weighted average combines all your graded components into a single percentage. Each task contributes according to its importance, so heavily weighted exams affect your final mark more than small homework assignments.
Course weighted average formula
The general formula is:
Weighted average = (Σ gradei × weighti) ÷ Σ weighti
Grades can be expressed as percentages or fractions of the maximum score. Weights are typically percentages that add up to 100, such as quizzes 20, assignments 25, midterm 30, final exam 25.
Example of a course weighted average calculation
Imagine quizzes average 90 percent with weight 20, assignments average 80 percent with weight 25, and your midterm is 78 percent with weight 30. Convert each grade to a decimal, multiply by its weight, then divide the total by the completed weight.
How to use the course weighted average calculator
Enter each component name, your score, the maximum score, and its weight. Click “Calculate weighted average” to see the current percentage from graded items and how much weight remains for ungraded work.
Planning targets with remaining course weight
Add a target overall percentage to estimate the average you must score on remaining components. The calculator compares your completed weighted marks with your goal and reports the required average on the unfinished portion of the course.
Related maths calculators for weighted decisions
You can explore other tools that apply similar ideas to different contexts:
- Student Loan Weighted Average Calculator — analyse blended interest rates across several loans.
- Stock Weighted Average Price Calculator — understand average share prices after multiple purchases.
- Cumulative Weighted Average Calculator — track running averages across multiple periods or courses.
Frequently asked questions
Can I use this calculator for any grading scheme?
Yes. As long as each component has a score, maximum score, and weight, the calculator can combine them. You can use percentages, points, or marks out of different totals.
What if my component weights do not add up to 100?
The tool still works. It reports the total defined weight so you can see whether your syllabus uses 100 percent or some other total. Remaining weight is based on your actual entries.
How are ungraded components treated in the results?
Ungraded components still contribute to total weight but not to completed marks. The calculator shows your current average only over completed weight and highlights how much weight is still open.
Can this calculator predict the score I need to reach a goal?
Yes. Enter your desired overall percentage in the target field. The calculator estimates the average percentage required across remaining components to hit that goal, assuming you fully use the remaining weight.
Can I explore scenarios for ungraded work?
Yes. Enter an assumed percentage for remaining components to see a projected overall course percentage. This helps you understand how different future performance levels change your final mark.
What does dropping lowest components do mathematically?
Dropping lowest components removes the weakest graded rows from the average. Their weight and contribution are excluded, showing how your current percentage would change under a “drop lowest scores” policy.
Where can I explore more weighted average examples?
For financial-style averages, you can also try the Weighted Average Accumulated Expenditures Calculator, which applies similar weighting logic to project spending over time.