Enter your scores and how much each part counts toward your grade to see your overall percentage and letter grade.
How a weighted grade works
Multiply each score by its weight, add those up, and divide by the total weight.
Grade = (score₁ × weight₁ + score₂ × weight₂ + …) ÷ (weight₁ + weight₂ + …)
With homework 92% (20%), quizzes 85% (20%), midterm 78% (25%) and project 95% (15%), the weights add up to 80%, and the grade so far is 86.44%. The final exam will make up the missing 20%; see how much you need on it with the final grade calculator.
Common letter grade scale
| Letter | Percent | Letter | Percent |
|---|
| A+ | 97–100 | C+ | 77–79 |
| A | 93–96 | C | 73–76 |
| A− | 90–92 | C− | 70–72 |
| B+ | 87–89 | D+ | 67–69 |
| B | 83–86 | D | 63–66 |
| B− | 80–82 | F | below 60 |
Schools set their own scales, so check your syllabus.
How we checked this
Before every update, this calculator is run in a real browser with these known answers, and it must match all of them:
- 92 (20%), 85 (20%), 78 (25%), 95 (15%) = 86.44% ✓
Last checked October 26, 2026. Spotted something wrong? The math is done in your browser with the formula shown on this page, so you can check any result by hand.
Questions people ask
How do I calculate my grade?
Multiply each score by its weight, add the results, and divide by the sum of the weights. If there are no weights, just average the scores.
What if my weights don't add up to 100%?
That usually means part of the course (like the final) isn't graded yet. Your grade is then your average over the parts done so far.
What is an 87% as a letter grade?
B+ on the most common scale, though some schools use different cut-offs.