Grade Calculator — Calculate Your Course Grade
Calculate your overall course grade from weighted categories like homework, quizzes, midterm, and final exam. See also Final Grade Calculator and GPA Calculator.
How the Grade Calculator Works
The grade calculator computes your overall course grade by combining scores from multiple weighted categories. Most courses divide your grade into categories such as homework, quizzes, midterm exams, and a final exam, each worth a different percentage of your total grade. This calculator multiplies each category score by its weight, sums the results, and gives you your overall weighted average.
Enter each grading category, its weight (percentage of total grade), and your score in that category. The calculator handles any number of categories and will warn you if your weights do not add up to 100%.
Weighted Average Grade Formula
Overall Grade = (Score1 x Weight1 + Score2 x Weight2 + ... + ScoreN x WeightN) / (Weight1 + Weight2 + ... + WeightN)
When weights sum to 100%:
Overall Grade = Score1 x (Weight1/100) + Score2 x (Weight2/100) + ... + ScoreN x (WeightN/100)
Step-by-Step Example
Homework: 92% x 0.20 = 18.40
Quizzes: 88% x 0.15 = 13.20
Midterm: 82% x 0.25 = 20.50
Final Exam: 78% x 0.40 = 31.20
Overall Grade = 18.40 + 13.20 + 20.50 + 31.20 = 83.30% (B)
Common Grading Structures
| Category | Typical Weight (Lecture) | Typical Weight (Lab) | Typical Weight (Seminar) |
|---|---|---|---|
| Homework/Assignments | 15-25% | 10-15% | 20-30% |
| Quizzes | 10-15% | 5-10% | 10-15% |
| Midterm Exam(s) | 20-30% | 15-20% | 15-25% |
| Final Exam | 25-40% | 20-30% | 20-30% |
| Lab Reports | N/A | 25-35% | N/A |
| Participation | 5-10% | 5-10% | 10-20% |
| Projects/Papers | 10-20% | 10-15% | 15-25% |
How to Calculate Your Course Grade
To calculate your course grade manually, follow these steps: First, find your syllabus and note each grading category and its weight. Second, determine your current score in each category by averaging all assignments within that category. Third, multiply each category score by its weight (as a decimal). Fourth, add all the weighted scores together. If your weights total 100%, the sum is your overall grade. If they do not total 100%, divide the sum by the total weight and multiply by 100 to normalize.
Frequently Asked Questions
What if my weights do not add up to 100%?
The calculator will normalize your grade by dividing the weighted sum by the total weight. For example, if your weights total 80%, the calculator divides by 0.80 to give you an equivalent grade out of 100%. However, you should check your syllabus to make sure you have included all categories.
How do I calculate my grade if some assignments are not yet graded?
Only include categories where you have a score. The calculator will normalize based on the weights you enter. To see what you need on remaining work, check the "Score Needed" section in the results, or use our Final Grade Calculator.
What is the difference between weighted and unweighted grades?
An unweighted grade treats all assignments equally — each one counts the same toward your average. A weighted grade assigns different importance to different categories. Most college courses use weighted grading, where the final exam counts more than a single homework assignment.
Can I use this for high school classes?
Yes. This calculator works for any course that uses weighted grading categories, whether in high school, college, or graduate school. Just enter the categories and weights from your syllabus.
How do I calculate my grade with extra credit?
If extra credit is added to a specific category, include it in that category's score (e.g., if you scored 95% plus 5% extra credit, enter 100%). If extra credit is a separate category, add it as its own row with the appropriate weight.
What grade scale does this use?
This calculator uses the standard US grade scale: A = 90-100%, B = 80-89%, C = 70-79%, D = 60-69%, F = below 60%. Some schools use different cutoffs (e.g., A = 93+). Check your syllabus for your specific school's scale.
How accurate is this calculator?
The calculator is mathematically exact for standard weighted average calculations. The result matches what your professor would compute using the same formula. Differences may arise if your school uses rounding rules, curves, or non-standard grading policies.