Weighted Grade Calculator
Homework, quizzes, midterms and finals each count for a different slice of your grade. Enter the weights and your scores to see your current grade, or leave a category blank to find out what you need on it.
Course categories
weights should add up to 100%What do you want to know?
- Categories counted
- 0
- Weight accounted for
- 0%
Formula: Grade = Σ (Weight × Score) ÷ Σ Weight
How do you calculate a weighted grade? Multiply each category's score by its weight, add the results, and divide by the total weight (100 if your weights add up to 100%). Example: homework 90% at a 20% weight and exams 85% at an 80% weight gives (90×20 + 85×80) ÷ 100 = 86%.
📝 How to use this calculator
- Copy your categories and weights from the syllabus. Look for a "Grading" or "Grade breakdown" section.
- Enter your average score for each category. If a category isn't graded yet, leave the score blank.
- Choose My current grade to see where you stand. The blank categories are ignored, not counted as zero.
- Or choose What I need on a category, pick it (usually the final), set a target, and read the score you need.
📐 Why a plain average is wrong
Most syllabi don't treat every item equally. Homework worth 20% and a final worth 35% pull your grade very differently, so averaging your raw scores gives a number that won't match your report card.
Worked example. Homework 92% (20% weight), Quizzes 85% (20%), Midterm 78% (25%), Final 88% (35%). Weighted points = 92×20 + 85×20 + 78×25 + 88×35 = 1840 + 1700 + 1950 + 3080 = 8570. Divide by 100 to get 85.7%. A plain average of the four scores would say 85.75%, close here, but the gap grows as weights get more uneven.
🎯 What do I need on my final?
Once you know your other scores and weights, the missing category has an exact answer:
Worked example. Same course, final not taken yet, target 90%. Known points = 92×20 + 85×20 + 78×25 = 5490 (out of 65 weight). Needed total = 90 × 100 = 9000. Points still needed = 9000 − 5490 = 3510 across the final's 35 weight, so you need 3510 ÷ 35 = 100.3%. That's above the maximum, so 90% is just out of reach. Even a perfect final gives 89.9%.
📊 Example weight breakdowns
| Course style | A common split (examples only) |
|---|---|
| Lecture course | Homework 20%, Midterm 30%, Final 40%, Participation 10% |
| Lab course | Lab reports 40%, Quizzes 20%, Final 40% |
| Project-based course | Projects 50%, Quizzes 20%, Final presentation 30% |
These are only examples. Always use the exact numbers in your own syllabus, because a 5-point weighting mistake can change your final grade.
🧭 Tips for getting it right
- Dropped scores. If your syllabus drops the lowest quiz, leave that quiz out of your average. Don't enter it as a zero.
- Extra credit. Add it to the relevant category's score, or add a small category with the weight your instructor gave it.
- Points vs percentages. If a category is graded in points, divide points earned by points possible, then multiply by 100.
- Weights that don't total 100%. Use "Scale weights to 100%" only if the gap is a typo. Some syllabi leave room for optional extra credit on purpose.
- Weighted grade ≠ weighted GPA. This tool grades one course using category weights. Weighted GPA adds bonus points for Honors/AP courses. For that, use the Cumulative GPA Calculator.
❓ Frequently asked questions
What if the score I need on my final is over 100%?
Your target is out of reach with a normal exam score. The tool shows the highest grade you can still reach with a perfect score, so you know the real ceiling.
Can I calculate my grade before every category is graded?
Yes. In "My current grade" mode the calculator only uses categories that have a score, so it shows your grade to date and doesn't treat missing work as zero.
Do weights have to add up to 100%?
The formula divides by total weight, so it still works if they don't. But if your syllabus says they should total 100% and yours shows 97% or 103%, it's probably a typing slip. Use the scale button to fix it.
How do I handle a dropped lowest score?
Remove that score from the category average before you enter it. A dropped score is not the same as a zero.
Is a weighted grade the same as a weighted GPA?
No. A weighted grade comes from category weights inside one course. A weighted GPA adds bonus points for harder courses like Honors or AP across all your courses.
Is this the same as a final grade calculator?
Very similar. Switch to "What I need on a category" and pick your final exam. For a quick one-number version, use the Final Grade Calculator.
Does this work for pass/fail or non-percentage courses?
Only if category scores can be written as percentages. For a full letter-grade average across a semester or degree, use the CGPA Calculator or SGPA Calculator.
Last updated: October 2026. Always confirm weights and policies with your syllabus or instructor.