EZ Grader Chart
40 Question Grade Chart
Find the percentage and letter grade for every number wrong on a 40-question test or quiz.
Formula
Grade % = (questions correct ÷ 40) × 100
Each question is worth 2.5 points.
| # Wrong | # Correct | Score | Grade |
|---|---|---|---|
| 0 | 40 | 100% | A+ |
| 1 | 39 | 97.5% | A+ |
| 2 | 38 | 95% | A |
| 3 | 37 | 92.5% | A- |
| 4 | 36 | 90% | A- |
| 5 | 35 | 87.5% | B+ |
| 6 | 34 | 85% | B |
| 7 | 33 | 82.5% | B- |
| 8 | 32 | 80% | B- |
| 9 | 31 | 77.5% | C+ |
| 10 | 30 | 75% | C |
| 11 | 29 | 72.5% | C- |
| 12 | 28 | 70% | C- |
| 13 | 27 | 67.5% | D+ |
| 14 | 26 | 65% | D |
| 15 | 25 | 62.5% | D- |
| 16 | 24 | 60% | D- |
| 17 | 23 | 57.5% | F |
| 18 | 22 | 55% | F |
| 19 | 21 | 52.5% | F |
| 20 | 20 | 50% | F |
| 21 | 19 | 47.5% | F |
| 22 | 18 | 45% | F |
| 23 | 17 | 42.5% | F |
| 24 | 16 | 40% | F |
| 25 | 15 | 37.5% | F |
| 26 | 14 | 35% | F |
| 27 | 13 | 32.5% | F |
| 28 | 12 | 30% | F |
| 29 | 11 | 27.5% | F |
| 30 | 10 | 25% | F |
| 31 | 9 | 22.5% | F |
| 32 | 8 | 20% | F |
| 33 | 7 | 17.5% | F |
| 34 | 6 | 15% | F |
| 35 | 5 | 12.5% | F |
| 36 | 4 | 10% | F |
| 37 | 3 | 7.5% | F |
| 38 | 2 | 5% | F |
| 39 | 1 | 2.5% | F |
| 40 | 0 | 0% | F |
Common questions
What grade is 1 wrong out of 40?
Missing 1 out of 40 questions is 39/40 = 97.5%, which is a A+.
What grade is 3 wrong out of 40?
Missing 3 out of 40 is 37/40 = 92.5%, a A- on a standard 10-point scale.
How many can you miss out of 40 and still pass?
To keep 60% (D-) you can miss up to 16 questions out of 40. For a 70% (C-) you can miss 12.
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%.