Weighted Grade Calculator
Most courses don't average your scores evenly — homework, quizzes, and exams each count for a different share. This free weighted grade calculator combines your category scores by their weights to find your true course average, letter grade, and what you'd need on any category to hit a target. Results update instantly as you type.
Enter your numbers
What-if planner
Your results
Per-category contribution
| Category | Score | Weight | Adds |
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How to use this calculator
List each grading category from your syllabus — homework, quizzes, participation, midterm, final — then enter your score in each one and its weight (what percent of the course grade it counts for). Add or remove categories with the buttons below the table (3 to 6 rows supported).
Use the what-if planner to set a target course grade and pick one category: it tells you the exact score you'd need in that category to reach the target with all other scores held fixed.
How it works
A weighted average multiplies each score by its weight before averaging, so a 90 on a 35%-weight final counts far more than a 90 on 5%-weight homework:
weighted average = Σ(score × weight) ÷ Σ(weights)
When your weights already total 100%, dividing by 100 is automatic. If they don't — say your syllabus lists weights that add to 85% — the normalize to 100% option rescales each weight proportionally (a 17% weight in an 85%-total system becomes 20%), which is what teachers usually intend. Turn it off to use the raw formula above, dividing by whatever the weights actually sum to. Letter grades use the standard scale: A ≥ 90, B ≥ 80, C ≥ 70, D ≥ 60, F below 60 — though your school's scale may differ, so check your syllabus.
Frequently asked questions
How do I calculate my weighted grade?
Multiply each category score by its weight, add those products together, and divide by the total weight. For example, a 90 in homework worth 20% and an 80 on the final worth 30% gives (90 × 20 + 80 × 30) ÷ 50 = 84%. The calculator above does this automatically for up to 6 categories.
What if my weights don't add up to 100%?
That is fine. If weights total something other than 100%, you can either divide by the actual total or rescale the weights so they add to 100 — this calculator shows a warning and normalizes them by default. Just make sure the relative sizes of the weights reflect the real importance of each category.
What's the difference between a weighted grade and a GPA?
A weighted grade is the average within one course, combining its categories (homework, quizzes, exams) by weight. A GPA is the average across many courses, converting each course's letter grade to grade points (usually on a 0–4 scale). Use this calculator for a single course; use our GPA calculator for your semester average.
How is this different from the final grade calculator?
This weighted grade calculator combines every graded category into your current average. The final grade calculator solves the reverse problem: given your current average and the final's weight, what score you need on the final exam to hit a target grade.
What letter grade do I get from my weighted average?
The standard scale used here is A = 90% and above, B = 80–89%, C = 70–79%, D = 60–69%, and F = below 60%. Scales can vary by school or teacher, so check your course syllabus for the exact cutoffs.