Free Grade Calculator (Weighted)
Find your current course grade with a clean, weighted calculator. Enter categories (Homework, Tests, Projects), their weights, and either numeric or letter grades. The calculator converts letters automatically and shows your overall grade and letter.
Enter Your Category Grades
Enter grades for each category to calculate your weighted average.
Your Overall Grade
Your Overall Grade
Category Breakdown
How to Use
Add Categories
List each category (Homework, Tests, Projects) and its weight (%). Decimals are fine (e.g., 12.5%).
Enter Grades
Type a grade for every category: 0-100 or A-F (A, B+, C-, etc.). Letters are converted automatically.
Calculate
Click Calculate to see your Overall Grade and Letter, plus a simple category breakdown.
Note: For a final course grade, weights should total 100%. Mid-term progress works too—just enter what's graded so far.
Formula
Weighted Average:
Overall = Σ(Gradei × Weighti) / 100
Letter Grade Scale
Common U.S. ranges used by most schools:
| Letter Grade | GPA Points | Percentage Range |
|---|---|---|
| A+ | 4.3 | 97–100% |
| A | 4.0 | 93–96% |
| A- | 3.7 | 90–92% |
| B+ | 3.3 | 87–89% |
| B | 3.0 | 83–86% |
| B- | 2.7 | 80–82% |
| C+ | 2.3 | 77–79% |
| C | 2.0 | 73–76% |
| C- | 1.7 | 70–72% |
| D+ | 1.3 | 67–69% |
| D | 1.0 | 63–66% |
| D- | 0.7 | 60–62% |
| F | 0.0 | 0–59% |
Note: Grading policies vary by school and district. Always check your course syllabus for the exact scale used in your class.
Understanding Your Results
- Overall Grade: your weighted average across the categories you entered.
- Letter: automatic conversion using the scale above (adjust in class if your syllabus differs).
- Category Breakdown: quick view of each category's average and weight.
What Is a Weighted Grade?
A weighted grade is your course average where each category (homework, quizzes, tests, projects) contributes a set percentage of the final mark. Instead of treating every score equally, a weighted grade multiplies each category's average by its weight (%) and sums the results. This gives a more accurate picture when major exams count more than smaller assignments.
Weighted grade = Σ(grade × weight) / 100
How to Calculate a Weighted Grade (Step-by-Step)
- List your categories (e.g., Homework, Tests) and each weight (%).
- Compute the average score for each category (0–100, letter grades allowed).
- Multiply each category average by its weight.
- Add the products together.
- Divide the sum by 100 to get your overall grade.
Example:
Homework 30% at 85, Tests 50% at 92, Projects 20% at 78
Calculation: (85×30 + 92×50 + 78×20) / 100 = (2550 + 4600 + 1560) / 100 = 87.1% (≈ B+)
Weighted vs. Unweighted Grades (Quick Comparison)
Unweighted
Averages all items equally, no category weights.
Weighted
Respects the syllabus weights; high-impact categories (exams) contribute more.
Common Mistakes to Avoid
- Weights don't total 100% for a final course grade.
- Mixing points and percentages within the same category.
- Not averaging per-category scores before applying the weight.
- Treating missing work as blank instead of 0 (if your policy requires it).
Key Takeaways
- Weighted grades respect category importance.
- Formula: Σ(grade × weight) / 100.
- For finals, weights should total 100%.
- Mid-term: enter what's graded so far for a current average.
- Letter grades can be converted to percentages.
FAQ
What is a weighted grade?
A weighted grade multiplies each category's average by its syllabus weight and sums the results, so high-value categories count more.
Do my weights have to equal 100%?
For a final course grade—yes. For a mid-term snapshot, you can enter the graded categories so far to see a current average.
Can I enter letter grades like A, B+, or C−?
Yes. The calculator converts letters to percentages using a common U.S. scale (you can adjust in class if your policy differs).
Why does my school's A range look different?
Grading policies vary by district and course. Always follow your syllabus/LMS.
Can I use decimals in weights (e.g., 12.5%)?
Yes. Weights accept decimals; the calculator normalizes to whatever sum you enter for a current snapshot.
How do I handle dropped/lowest scores?
Remove dropped items from the category before you compute its average.
Should I enter raw points or percentages?
Enter percentages for each category (average within the category first). The tool applies weights to category percentages.
How do I treat missing assignments?
Follow your policy: many courses count missing work as 0 until submitted. Enter the category average accordingly.
Can I calculate with only some categories filled in?
Yes. You'll see a current average based on the weights entered so far.
Is the GPA shown the same as my school's GPA?
No. The table shows a common mapping. Schools may cap A at 4.0 (no A+) or use different ranges.
What's the difference between category weight and item weight?
This calculator applies category weights (e.g., Tests = 50%). If your course uses item-level weights, average those items first inside the category.
Why is my result different from the LMS?
Your LMS may apply special rules (rounding, drops, extra credit). Mirror those rules in your category averages.
Can I enter percentages with the % sign (like 85%)?
Yes. The input accepts values like "85%" or plain "85".
Does this calculator store any data?
No. It runs in your browser and doesn't require signup.
How can teachers use this with students?
Share the page during grade talks so students understand how category weights affect outcomes.
Your gradebook, finally easy.
Keep grades, attendance, and behavior in one simple place.