Enter your category scores and weights to calculate your overall grade
Most courses use weighted categories — assignments, quizzes, midterms, and finals each contribute a different percentage to your overall grade. A weighted average accounts for these differences. For example, if homework is worth 30% and you have 85%, and exams are worth 70% and you have 78%, your weighted average is (0.30 × 85) + (0.70 × 78) = 25.5 + 54.6 = 80.1%.
| Category | Typical weight |
|---|---|
| Homework / Assignments | 20–30% |
| Quizzes | 10–15% |
| Midterm exam | 20–25% |
| Final exam | 25–35% |
| Participation / Labs | 5–10% |
This is the most common question students have. The formula is: Required final score = (Target grade − Current weighted average × (1 − Final weight)) ÷ Final weight. If your current weighted grade before the final is 82%, the final is worth 30%, and you want a 90% in the course: (90 − 82 × 0.70) ÷ 0.30 = (90 − 57.4) ÷ 0.30 = 108.7%. If the number exceeds 100%, you cannot reach your target with the final alone.
| Letter | Minimum % |
|---|---|
| A | 93% |
| A− | 90% |
| B+ | 87% |
| B | 83% |
| B− | 80% |
| C+ | 77% |
| C | 73% |
| D | 60% |
| F | Below 60% |
Multiply each category's score by its weight (as a decimal), then add all the products together. The sum is your weighted grade. Make sure all weights add up to 100%.
If categories have been completed that do not sum to 100%, the calculator proportionally adjusts the weights of completed categories to show your current standing. The remaining weight belongs to categories not yet graded, like a final exam.
It depends on the final's weight and your current grade. If the final is worth 30% and your current weighted average is 85%, getting a 0% on the final gives you 85 × 0.70 = 59.5% — likely failing. Use the calculator to find your minimum required final score.
Extra credit adds points to the relevant category score. If your homework average is 88% and you earn 3 extra credit points, enter 91% as your homework score. Extra credit effectively raises the numerator without changing the denominator.
A curved grade adjusts scores relative to class performance. Common methods include adding a fixed number of points to all scores, adjusting so the highest score becomes 100%, or fitting grades to a bell curve. Curving can raise or lower individual grades depending on the method.