Weighted grade calculator
List your grade categories with the weights from your syllabus and your scores in each. You get your weighted grade, its letter on a scale you can edit, and what any category still without a score needs.
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A worked example
A syllabus weights homework 20%, quizzes 15%, the midterm 25% and the final exam 40%. Halfway through the term you have 92% on homework, quiz scores of 78, 85, 64 and 90 with the lowest one dropped, 81% on the midterm, and no final yet.
- Quizzes: dropping the 64 leaves (78 + 85 + 90) / 3 = 84.33%.
- Weight × score: 20 × 92 = 1,840; 15 × 84.33 = 1,265; 25 × 81 = 2,025. Together, 5,130.
- Divide by the weights that have scores: 20 + 15 + 25 = 60, so 5,130 / 60 = 85.5%. That is a B on a common syllabus scale (B from 83 to 86.99).
Two other numbers come from the same arithmetic. If the final counted as 0, you would have 5,130 / 100 = 51.3%. To finish with 90%, the final needs (90 × 100 − 5,130) / 40 = 96.75%. Press “Fill in the example” in the calculator to see this worked out.
grade = sum of (weight × score) / sum of the weights that have scores
When the weights don’t add to 100
The calculator divides by whatever your weights add up to, so each category keeps its share of the grade, and it tells you when the total is not 100. Weights of 25, 25 and 40 with scores of 80, 90 and 70 give (2,000 + 2,250 + 2,800) / 90 = 78.33%. Dividing by 100 would say 70.5%, which treats the missing 10% as a zero.
A total under 100 usually means a category is missing from your list, such as participation, or one that has not been graded yet. A total over 100 usually means a typo. Either way, compare your list with the syllabus before you rely on the result. Canvas handles one case differently: it scales a total under 100 up the same way but leaves a total over 100 alone. For a Canvas course, the Canvas grade calculator follows Canvas’s rule exactly.
Several scores in one category
Type every score in the category, separated by spaces or commas. How they are combined depends on how you write them:
- Percentages (85, 92, 78) are averaged with equal weight: (85 + 92 + 78) / 3 = 85%.
- Points (9/10, 40/100) are added up first: 49 / 110 = 44.55%. A bigger assignment counts for more, which is how most gradebooks treat points. Averaging the two percentages would say 65%.
Drop lowest removes the lowest percentages before combining and never removes a category’s last score. Some gradebooks, Canvas among them, instead drop whichever score raises your grade most, which can be a different one when assignments are worth different points.
Which calculator to use
This one is for a course graded by category weights, when you know your score in each category. If your course is in Canvas and you want each assignment, excused work and drop rules handled the way Canvas handles them, use the Canvas grade calculator. If the final exam is the only thing left and you want the score it needs, the final grade calculator answers that directly. For a single test’s percentage, use the test score calculator.
Weighted grade calculator FAQ
How do you calculate a weighted grade?
Multiply each category’s score by its weight, add the results, and divide by the total of the weights. With weights that add to 100 this is the same as adding up weight × score / 100 for every category. The worked example above goes through it step by step.
What if my weights don’t add up to 100?
Divide by what they do add up to. The calculator does this for you and says so under the result. A total below 100 often means a category is missing from your list, so check it against your syllabus.
How do I find my grade when some categories have no scores yet?
Leave those scores blank. The calculator works out your grade from the categories that have scores, which is how most gradebooks show a grade so far. It also shows the grade if the blank categories ended at 0, and, if you enter a target, the average you need on them.
How does drop lowest work here?
It removes the lowest percentage, or the lowest few, in that category before the scores are combined, and it never removes the last one. Canvas drops whichever score helps your grade most instead, which can differ when assignments have different point values. For that, use the Canvas grade calculator.
Is a weighted grade the same as a total-points grade?
No. In a total-points course every point counts the same, so a 100-point test outweighs a 10-point quiz ten to one. In a weighted course each category has a fixed share no matter how many points it holds. If your syllabus lists percentages for categories, your course is weighted.
Does this calculator send or save my grades?
No. The math runs in your browser, and the numbers and names you type are not sent to any server or stored on your device. Close the tab and they are gone. Like every page on this site, the page itself is counted in our visit statistics, which never include what you type.
Silent Student is a desktop study app that works inside Canvas and other course sites. See how it works if you are curious.