EZ Grader Chart
30 Question Grade Chart
Find the percentage and letter grade for every number wrong on a 30-question test or quiz.
Formula
Grade % = (questions correct ÷ 30) × 100
Each question is worth 3.33 points.
| # Wrong | # Correct | Score | Grade |
|---|---|---|---|
| 0 | 30 | 100% | A+ |
| 1 | 29 | 96.7% | A |
| 2 | 28 | 93.3% | A |
| 3 | 27 | 90% | A- |
| 4 | 26 | 86.7% | B |
| 5 | 25 | 83.3% | B |
| 6 | 24 | 80% | B- |
| 7 | 23 | 76.7% | C |
| 8 | 22 | 73.3% | C |
| 9 | 21 | 70% | C- |
| 10 | 20 | 66.7% | D |
| 11 | 19 | 63.3% | D |
| 12 | 18 | 60% | D- |
| 13 | 17 | 56.7% | F |
| 14 | 16 | 53.3% | F |
| 15 | 15 | 50% | F |
| 16 | 14 | 46.7% | F |
| 17 | 13 | 43.3% | F |
| 18 | 12 | 40% | F |
| 19 | 11 | 36.7% | F |
| 20 | 10 | 33.3% | F |
| 21 | 9 | 30% | F |
| 22 | 8 | 26.7% | F |
| 23 | 7 | 23.3% | F |
| 24 | 6 | 20% | F |
| 25 | 5 | 16.7% | F |
| 26 | 4 | 13.3% | F |
| 27 | 3 | 10% | F |
| 28 | 2 | 6.7% | F |
| 29 | 1 | 3.3% | F |
| 30 | 0 | 0% | F |
Common questions
What grade is 1 wrong out of 30?
Missing 1 out of 30 questions is 29/30 = 96.7%, which is a A.
What grade is 3 wrong out of 30?
Missing 3 out of 30 is 27/30 = 90%, a A- on a standard 10-point scale.
How many can you miss out of 30 and still pass?
To keep 60% (D-) you can miss up to 12 questions out of 30. For a 70% (C-) you can miss 9.
How do you calculate a test grade?
Divide the number correct by the total questions and multiply by 100. Example: 22 correct out of 25 = 22 ÷ 25 × 100 = 88%.