Weighted Grade Calculator

Combine assignment, quiz and exam scores with their weights into one overall course grade.

Each line ends with the score (out of 100) and its weight. A label in front is optional. Weights need not add up to 100.

Weighted grade
82.9%
Overall grade
FD60%C70%B80%A90%82.9% · B-
Letter grade
B-
Total weight entered
100 %
Score in each category
Item 1 (20%)Item 1 (20%) — Score: 92%92%Item 2 (30%)Item 2 (30%) — Score: 85%85%Item 3 (50%)Item 3 (50%) — Score: 78%78%Weighted gradeWeighted grade — Score: 82.9%82.9%
Show the working
  1. 92 × 20 = 1840.00
  2. 85 × 30 = 2550.00
  3. 78 × 50 = 3900.00
  4. Grade = 8290.00 ÷ 100 = 82.90%

Runs entirely in your browser. Nothing you enter is uploaded.

Formula

Weighted grade = Σ (score × weight) ÷ Σ weight

How it works

Most syllabi split the course grade into categories — homework, quizzes, a midterm, a final — each worth a fixed share. Multiply each score by its weight, add the products, and divide by the total weight.

If the weights you enter add up to less than 100%, the result is your current standing on the work graded so far, which is usually what online gradebooks show. Once every category is filled in, the weights should total 100%.

Enter category averages, not individual assignments, when a category holds many items. For example, if homework is worth 20% and you averaged 92% across all assignments, a single line “92 20” is enough.

Frequently asked questions

Can I use points instead of percentages?

Use the percentage for each category (points earned ÷ points possible × 100). Weights can be any numbers — 2 and 1 work the same as 66.7% and 33.3%.

Why is my weighted grade different from my simple average?

A simple average treats every score equally. In a weighted average, a low score in a heavily weighted category such as the final pulls the result down more.

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