Education calculations
How to calculate grade
For a weighted course grade, multiply each category score by its share of the course, then add the contributions. A heavily weighted exam affects the result more than a small assignment.
Open the grade calculatorWeighted grade = sum of (score × weight) ÷ sum of weights
Worked weighted-grade example
| Category | Score | Weight | Contribution |
|---|---|---|---|
| Assignments | 88% | 30% | 26.4 |
| Midterm | 76% | 30% | 22.8 |
| Final exam | 92% | 40% | 36.8 |
Add the contributions: 26.4 + 22.8 + 36.8 = 86%. The weights total 100%, so no further normalization is needed.
Do not simply average the three scores. Their unweighted mean is 85.33%, which answers a different question.
When completed weights do not total 100%
Suppose only assignments and the midterm are complete. Their weights total 60%, and their contributions total 49.2. The current grade on completed work is:
49.2 ÷ 60 × 100 = 82%
This is different from treating the uncompleted final as zero, which would show 49.2% for the entire course. Check how your teacher or learning system displays in-progress grades.
Points-based courses
If every point is equally valuable, use total earned points divided by total possible points. Earning 184 points out of 220 gives 184 ÷ 220 × 100 = 83.64%. Do not also apply category weights unless the syllabus requires them.
Find the score needed on a final
If 60% of the course is complete with an 82% current grade, it contributes 49.2 points. To finish with 85%, the remaining 40% must contribute 35.8 points. The required final score is 35.8 ÷ 40 × 100 = 89.5%.
If the answer exceeds 100%, the target is not reachable under the stated weights unless extra credit or another grading rule applies.
Check the result online
The free Grade Calculator combines your category scores and weights. Enter the values exactly as shown in the syllabus and confirm whether missing work should be excluded or counted as zero.