Weighted Grade Calculator
Use this weighted grade calculator when homework, quizzes and exams count differently.
- Free
- No sign-up
- We never receive your grades
Match your class
Your school's scale may differ. Set your own scale.
Saved in this browser.
How to use this weighted grade calculator
Enter each category, its weight and your grade in it. Your grade so far appears while you type.
- Type a category name and its Weight % from your syllabus.
- In Grade so far, type 92, 45/50 or 92%. Need a test as a percent first? Use the Test Grade Calculator.
- To list single scores, open the ⋯ menu and press "Enter assignments instead".
- Under "Match your class", pick your Grading scale, or set your own on the Grading Scale page.
If your class adds up plain points, use the Grade Calculator instead.
How weighted grades work
Each category counts for its share of the course, however many points it holds. Multiply each category's percent by its weight, add the results, and divide by the weights you used.
Grade = sum of (category % × weight) ÷ sum of weights graded
An extra-credit category goes on top: its % × its weight ÷ the total weight of your regular categories, graded or still open. The FAQ below has an example.
Weighted grade examples with real numbers
Canvas's guide gives this one, with weights as decimals: (.75 × .20) + (.98 × .50) + (.87 × .30) = .901, or 90.1%.
Made-up example, final still open:
| Category | Weight % | Grade so far |
|---|---|---|
| Homework | 15 | 92 |
| Quizzes | 20 | 84 |
| Labs | 15 | 88 |
| Midterm | 20 | 79 |
| Final | 30 | Blank |
Multiply and add: (92 × 15) + (84 × 20) + (88 × 15) + (79 × 20) = 5960. Only 70% is graded, so divide by 70 to get 85.14%.
Your grade so far vs your final grade
Your grade so far covers graded work only. Your final grade covers everything. In the made-up class above, your 85.14% is not locked in:
- 100 on the final gives 89.6%, the Best possible.
- 0 on the final gives 59.6%, the Lowest possible.
Check "Count work not graded yet as zero" to see the 59.6% view.
How dropping your lowest score works
The lowest percent is not always the best score to drop, because points count too. Made-up example: quizzes of 7/10, 80/100, 95/100 and 96/100.
- Drop the 7/10, the lowest percent: 271/300, or 90.33%.
- Drop the 80/100, which lost the most points: 198/210, or 94.29%.
Canvas picks the drop that helps most. In its own example, 50/50, 65/100 and 12/24 make 73%. It drops the 65/100, not the lower 12/24, and gets 84%.
To drop a score, enter a category's assignments in its ⋯ menu and fill in Drop lowest. Drop method offers "Best score for me" or "Lowest percent". We cannot drop highest scores or protect a score from a drop.
What you need in the remaining categories
The Goal box appears while work is open. Enter a Goal % or pick a letter to see the average you need. If a Lowest percent drop covers open work, it shows a note instead, because a better score there can lower your grade.
In the made-up class, a goal of 85 takes (85 − 59.6) ÷ 30 × 100 = 84.67% on the final. A goal of 90 takes extra credit, because Best possible is 89.6%.
If only the final is left, press "Plan my final" to open the Final Grade Calculator.
For teachers: share a class link
Set your categories, weights and drop rules, then press "Copy class link". Students open it, press "Load shared data" and type their own scores.
The link has no scores in it. It also leaves out your grading scale and rounding choice, so tell students to set those. Links over 2,000 characters will not copy. For setup help, read How to Set Up a Gradebook Students Can Check.
Why this may not match your gradebook
Your gradebook shows a lower grade
Your gradebook may count ungraded work as zero, like the Final score in Canvas's gradebook export. Your teacher may also drop by lowest percent, so try that Drop method.
Your gradebook shows a higher grade
Look for a drop rule, excused work or extra credit you left out. Canvas leaves excused work out of the total, so enter that category's assignments and mark the row "Excused: does not count".
The gap is under a point
A typed category grade may be rounded. Enter the assignments so we work from exact points, then check whether your teacher rounds the final number.
What real schools do: category weights
Your syllabus wins. The US has no national standard, and a 2005 U.S. Department of Education overview says classroom teachers typically decide grades. We found no source for typical weights, so we print none. Canvas's 20%, 50% and 30% are a sample.
Schools read the result differently too. Take a made-up weighted 89.6. The Johns Hopkins School of Nursing rounds final course grades to a whole number, so that is a 90, an A-. Purdue Global's undergraduate table runs B+ up to 89.99.
Weighted grade calculator FAQ
What if my weights do not add up to 100%?
You get a notice, and we still work out your grade. If the total is over 100%, open any bonus category's ⋯ menu and check "This is extra credit". Canvas also allows totals above or below 100%, so go by your syllabus.
How does an extra-credit category count?
Here, its % × its weight is divided by the total weight of your regular categories, graded or still open, and added to your grade. Its own weight stays out of the total, so the bonus adds the same amount before and after the rest is graded. Made-up example: Homework weighs 20% and you have 90, the 80% Final is still open, and a 5% bonus category is at 100. Your grade so far is 90 + (100 × 5) ÷ (20 + 80) = 95%. Dividing the bonus by the 20% graded would give 115%. Teachers set their own extra-credit rules, so check yours.
What if a category has no grades yet?
Leave it blank. It stays out of your grade so far, as it does in Canvas.
Does Copy link share my grades?
Yes. "Copy link" puts your scores in the link, and "Copy class link" does not. Otherwise your grades stay in this browser, as our privacy policy explains.
Related tools and guides
- Grade Calculator: Find your current grade from your assignments.
- Final Grade Calculator: Find out what you need on the final.
- How to Set Up a Gradebook Students Can Check
- Weighted Grades in Excel and Google Sheets
- Zero, 50% or Missing: How Each Changes a Grade
Sources
- How do I weight the final course grade based on assignment groups? - Instructure Community
- How do I view total scores in the Gradebook as if all ungraded assignments were given zero grades? - Instructure Community
- How do I create rules for an assignment group? - Instructure Community
- How do I change the status of a submission in the Gradebook? - Instructure Community
- Education in the United States: A Brief Overview (U.S. Department of Education, September 2005)
- Grading Policy | Johns Hopkins University Academic Catalogue
- Academic Grades and Marks
Every rule these tools use, and how each number is worked out, is on How we calculate.
Cite this page
GradeCat. (2026, November 4). Weighted Grade Calculator. https://gradecat.com/weighted-grade-calculator/
Last updated 2026-11-04. Results are estimates, not official grades. Your school may use different rules. Found a wrong result? Report it.