Weighted Grade Calculator
Calculate your weighted final grade by entering each assignment's grade and its weight.
| Assignment | Grade (%) | Weight (%) |
|---|---|---|
What is a Weighted Grade Calculator?
A weighted grade calculator computes your final course grade when different assignments and exams carry different levels of importance. In many classes, a final exam is worth more than a homework assignment, and a weighted grade calculator accounts for exactly that. It answers the question: “What is my overall grade when everything counts differently?”
How to Use the Weighted Grade Calculator
- Enter each assignment or category name (optional)
- Enter your grade percentage for each item
- Enter the weight of each item (weights typically total 100%)
- Click Calculate Grade
Weighted Grade Formula
- Weighted Grade = Σ(Grade × Weight) ÷ Σ(Weight)
Each grade is multiplied by its weight, the weighted values are summed, and the result is divided by the total weight.
Example Calculation
| Item | Grade | Weight | Contribution |
|---|---|---|---|
| Midterm | 82% | 30% | 24.6 |
| Final Exam | 74% | 40% | 29.6 |
| Homework | 95% | 20% | 19.0 |
| Participation | 100% | 10% | 10.0 |
| Total | — | 100% | 83.2% |
Why Weighted Grades Matter
Weighted grading systems are common in high school, college, and professional certification programs. They allow instructors to emphasize the material that matters most. For students, understanding how weights affect your final grade is essential for planning: if a final exam is worth 40% of your grade, it has a much larger impact than a homework assignment worth 10%.
How This Calculator Works
This tool multiplies each grade by its weight, adds up all the weighted contributions, and divides by the total weight. You can add as many rows as you need with the + Add Row button. It works entirely in your browser — no data is sent to any server, making it private, fast, and accurate. The result panel shows both your weighted percentage and the corresponding letter grade.
Frequently Asked Questions
Do my weights need to add up to 100%?
No, but they usually do. If your weights do not total 100%, the calculator still works correctly because it divides by the sum of the weights you entered.
What if I have a grade below zero or above 100?
Grades should normally stay between 0 and 100%. Extra credit can push a grade slightly above 100%, and the calculator will still compute a meaningful result.
How is weighted grade different from average?
A simple average treats every assignment equally. A weighted average gives each assignment its own importance, which produces a more accurate final grade when assignments have different point values or significance.