Weighted Grade Calculator
Enter each grading category with its weight and your score, and get your current course grade as a percentage and a letter. Categories you have not been graded on yet are left out, so the result is your grade so far. Free, no sign-up.
Grade Categories
Letter Grade Scale
| Letter grade | Percentage |
|---|---|
| A | 93% and above |
| A- | 90% and above |
| B+ | 87% and above |
| B | 83% and above |
| B- | 80% and above |
| C+ | 77% and above |
| C | 73% and above |
| C- | 70% and above |
| D+ | 67% and above |
| D | 63% and above |
| D- | 60% and above |
| F | Below 60% |
How to Use the Weighted Grade Calculator
- 1. Set the categories and weights. The widget starts with Homework 20%, Quizzes 20%, Midterm 25% and Final Exam 35%. Rename them and change the weights to match your syllabus, and add a category for anything else, such as projects or participation.
- 2. Enter your scores. For each category type the points you earned and the points possible. To enter a percentage directly, leave Out of at 100 and type the percentage as the score.
- 3. Leave future work blank. A category with no score is ignored, and the others are rescaled to their combined weight. The Weights entered card shows how much of the course has been graded.
- 4. Read the result. You get your current grade to one decimal, the letter grade and the weights entered. If the weights you filled in do not total 100%, a note says the grade is normalised.
How a Weighted Grade Works
Each category's score is turned into a percentage, multiplied by its weight, and the products are added. When the graded categories carry less than 100% of the course, the sum is divided by the weight graded so far: grade = Σ(weight × percentage) ÷ Σ(weight).
Midway through the course
Homework: 92 out of 100, weight 20 — 20 × 92 = 1,840
Quizzes: 85 out of 100, weight 20 — 20 × 85 = 1,700
Midterm: 78 out of 100, weight 25 — 25 × 78 = 1,950
Final Exam: not taken yet — left blank, so it is excluded
Weights entered = 65; current grade = 5,490 ÷ 65 = 84.5%, a B on this scale
If you then score 90 on the final, the full-course grade is (5,490 + 35 × 90) ÷ 100 = 86.4%, still a B. Remember that 84.5% is a grade on the 65% of the course graded so far, not a forecast. To see what score on the final would reach a target, carry the 84.5% across to the Final Grade Calculator: a target of 85% needs 86.0% on the final, and 90% would need more than 100%.
The Letter Scale and Its Limits
The letter comes from a fixed plus-and-minus scale: A from 93, A- from 90, B+ from 87, B from 83, B- from 80, C+ from 77, C from 73, C- from 70, D+ from 67, D from 63, D- from 60, and F below 60. It uses the exact percentage, not a rounded one, so 89.9 is a B+. Schools and instructors set their own cut-offs and rounding rules, so confirm yours in the syllabus. The Letter Grade Calculator lets you change the scale.
Common Mistakes
- Averaging the category scores. A 100% quiz average does not offset a 60% exam average equally; the weights decide how much each counts.
- Entering one assignment per category. A category with many assignments needs one score. Add up the points earned and possible across it, or use the average percentage if your syllabus says each assignment counts equally; the two differ when assignments have different point values.
- Forgetting dropped scores or extra credit. The calculator does not drop a lowest score. Remove it yourself before totalling the category.
- Mixing up current grade and final grade. The result is based only on graded work; unfinished categories can move it a lot.
Which Grade Tool Do You Need?
| You want to know | Use |
|---|---|
| Your grade across weighted categories | This Weighted Grade Calculator |
| What you need on the final to reach a target | Final Grade Calculator |
| The average of several tests, equally weighted, and the next score needed | Test Average Calculator |
| The letter for one percentage, on your own scale | Letter Grade Calculator |
| A grading chart for a printed test | Easy Grader |
| A weighted mean of any numbers | Weighted Average Calculator |
Frequently Asked Questions
- How does a weighted grade calculator work?
- Each category's percentage is multiplied by its weight, and the results are added together. If exams are worth 40% of the course and you average 90%, exams contribute 36 points to the overall grade. The calculator adds all the categories and divides by the weight entered.
- What if my weights do not add up to 100%?
- The calculator divides by the total weight you entered, so each category counts in proportion to its weight and the result is still a valid average of what you filled in. A note tells you the grade was normalised. Check your syllabus: weights that miss 100% often mean a category is missing.
- How do I calculate my grade if I haven't taken the final yet?
- Leave the final's score blank. The grade is then computed over the categories that have scores, as in the example above. It is your standing so far, not a prediction, and the Final Grade Calculator turns it into the score you need.
- Can I enter percentages instead of points?
- Yes. Leave Out of at 100 and type your percentage as the score, so 92% becomes 92 out of 100.
- What letter grade is 85%?
- A B on the scale used here, which runs from 83 to just under 87. On a 10-point scale, where 80 to 89 is a B, it is also a B. A school using different cut-offs may give a different letter.
- How do I weight assignments within a category?
- Add the points earned and the points possible for every assignment in the category and enter the totals, if bigger assignments should count for more. If every assignment counts the same, average their percentages and enter that with Out of at 100.