Find your final class grade from weighted assignments and exams.
Add each assignment, quiz, or exam along with the score you earned and its weight in the final grade.
| Assignment | Score (%) | Weight (%) |
|---|
Your Final Grade
0.00%
Letter grade: — · Total weight entered: 0%
Our Grade Calculator takes the headache out of computing your final class grade. Instead of doing weighted-average math by hand or building a spreadsheet, you simply enter each assignment, the score you earned (as a percentage), and how much that assignment is worth in the final grade (also as a percentage). The calculator instantly returns your overall class percentage, the equivalent letter grade, and the total weight you have entered so far.
One of the most useful features of this calculator is automatic weight normalization. If your entered weights add up to less than 100% — for example, because the final exam has not happened yet — the calculator still returns a meaningful number by normalizing against the weights you did enter. This lets you project your standing at any point in the semester.
Final Grade = Σ ( Score × Weight ) ÷ Σ ( Weight )
Suppose your syllabus lists these components:
Sum = 18.4 + 13.2 + 21.25 + 36.0 = 88.85. Total weight = 100%. Your final grade = 88.85 ÷ 1.00 = 88.85% (B+).
Many students get confused when their weights do not add to 100%. The most common scenario is mid-semester: you have grades for homework and the midterm but the final has not happened yet. If your weights sum to 60% (homework 20% + quizzes 15% + midterm 25%), the calculator divides your weighted sum by 0.60 to project your standing based on what has been graded so far. This projected number is what you would get if your performance on remaining work matched your performance so far.
This projection is invaluable for strategic decisions: it tells you whether you need a strong final to maintain an A, or whether you can afford a weaker final and still keep a B. Pair this projection with our Final Grade Calculator (linked in the sidebar) to compute the exact final exam score you need to hit your target grade.
Multiply each assignment score by its weight (as a decimal), then sum the results. For example, if your midterm is worth 30% and you scored 85, and your final is worth 70% and you scored 90, your grade = (85 × 0.30) + (90 × 0.70) = 25.5 + 63 = 88.5.
The calculator normalizes weights automatically. If your weights total 80%, the calculator divides by 0.80 to give you a percentage out of 100. This handles the common case where not all assignments have been graded yet.
Yes. Add the extra credit as a separate assignment with its own weight. Most teachers count extra credit as additional points on top of the 100% base, so you can enter it with a small weight like 5% and a score of 100.
Conversion varies by school. A common US scale is A = 90-100%, B = 80-89%, C = 70-79%, D = 60-69%, F = below 60%. Your syllabus should specify the exact cutoffs your instructor uses.
Yes. For point-based classes, enter "Points Earned" as the score and "Total Points" as the weight. The calculator will compute your overall percentage automatically.
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