Grade calculator for a 24-question test
On a 24-question test, each question is worth 4.17% and you can miss 2 for an A, 4 for a B, 7 for a C and 9 for a D (common 90/80/70/60 scale). One wrong answer is 95.8%.
24-question test grade chart
Score for every number of wrong answers, rounded to one decimal.
| Wrong | Right | Score | Letter |
|---|---|---|---|
| 0 | 24 | 100.0% | A |
| 1 | 23 | 95.8% | A |
| 2 | 22 | 91.7% | A |
| 3 | 21 | 87.5% | B |
| 4 | 20 | 83.3% | B |
| 5 | 19 | 79.2% | C |
| 6 | 18 | 75.0% | C |
| 7 | 17 | 70.8% | C |
| 8 | 16 | 66.7% | D |
| 9 | 15 | 62.5% | D |
| 10 | 14 | 58.3% | F |
| 11 | 13 | 54.2% | F |
| 12 | 12 | 50.0% | F |
| 13 | 11 | 45.8% | F |
| 14 | 10 | 41.7% | F |
| 15 | 9 | 37.5% | F |
| 16 | 8 | 33.3% | F |
| 17 | 7 | 29.2% | F |
| 18 | 6 | 25.0% | F |
| 19 | 5 | 20.8% | F |
| 20 | 4 | 16.7% | F |
| 21 | 3 | 12.5% | F |
| 22 | 2 | 8.3% | F |
| 23 | 1 | 4.2% | F |
| 24 | 0 | 0.0% | F |
The math: score = right answers ÷ 24 × 100. Each question is 100 ÷ 24 = 4.17 percentage points, so every wrong answer takes 4.17 points off a perfect 100%. Letters use the common 90/80/70/60 scale with no rounding up; your teacher may use different cutoffs, plus and minus grades or a curve, so check your school’s grading policy.