Multiply each category’s score by its weight, sum the weighted scores, and divide by the total weight used to find the overall weighted grade.
Grade Calculator
Overall course grade from weighted categories (e.g. homework, quizzes, tests, final exam).
Calculating an Overall Weighted Course Grade
Most courses combine several graded categories — homework, quizzes, tests, and a final exam, for example — each contributing a different percentage to the final grade. This calculator computes the overall weighted grade from up to four categories’ scores and weights. It covers searches like grade calculator, weighted grade calculator, and course grade calculator.
How the Grade Calculator Works
Formula
Total weight used = Weight 1 + Weight 2 + Weight 3 + Weight 4
Overall grade = (Score1 × Weight1 + Score2 × Weight2 + Score3 × Weight3 + Score4 × Weight4) ÷ Total weight used
Worked Example
Homework 90% at 10% weight, quizzes 85% at 20% weight, tests 80% at 30% weight, final exam 75% at 40% weight: Total weight = 10+20+30+40 = 100. Overall grade = (90×10 + 85×20 + 80×30 + 75×40) ÷ 100 = (900+1700+2400+3000) ÷ 100 = 80.0%.
Why Weights Don’t Need to Add to Exactly 100
The calculator uses whatever total weight you enter as the denominator, so weights don’t strictly need to sum to 100 — but matching your syllabus’s stated category breakdown as closely as possible gives the most accurate result, and leaving unused categories at 0% weight is the correct way to handle a course with fewer than four categories.
Frequently Asked Questions
What if my course has more than four graded categories?
Combine closely related categories into one input where possible (for example, averaging several quiz scores into one “quizzes” percentage), or calculate a sub-total for extra categories separately and factor it in manually.
What if my course has fewer than four categories?
Leave any unused category’s weight at 0% — a 0% weight contributes nothing to the calculation, so only the categories with a nonzero weight affect your overall grade.
Should I use my syllabus’s exact stated weights?
Yes — enter the exact percentage weights stated in your course syllabus for the most accurate overall grade estimate, since instructors set these individually per course.
Does this calculator account for extra credit?
Not directly — if extra credit is added to a specific category’s score, factor it into that category’s percentage before entering it; extra credit policies vary widely by instructor.
Can I use this calculator to figure out what I need on a final exam?
You can work backward by entering your known category scores and testing different final exam percentages to see what overall grade results, though this calculator doesn’t solve directly for a required final exam score.
Does this calculator round to letter grades?
No — it reports a numeric percentage; converting that percentage to a letter grade depends on your specific institution’s or course’s grading scale.
What if two categories have the same weight but I want to enter them separately?
Enter each category’s score and its own weight in separate input pairs — the calculator handles categories independently regardless of whether their weights happen to match.
