Grade calculator for a 33-question test
On a 33-question test, each question is worth 3.03% and you can miss 3 for an A, 6 for a B, 9 for a C and 13 for a D (common 90/80/70/60 scale). One wrong answer is 97.0%.
33-question test grade chart
Score for every number of wrong answers, rounded to one decimal.
| Wrong | Right | Score | Letter |
|---|---|---|---|
| 0 | 33 | 100.0% | A |
| 1 | 32 | 97.0% | A |
| 2 | 31 | 93.9% | A |
| 3 | 30 | 90.9% | A |
| 4 | 29 | 87.9% | B |
| 5 | 28 | 84.8% | B |
| 6 | 27 | 81.8% | B |
| 7 | 26 | 78.8% | C |
| 8 | 25 | 75.8% | C |
| 9 | 24 | 72.7% | C |
| 10 | 23 | 69.7% | D |
| 11 | 22 | 66.7% | D |
| 12 | 21 | 63.6% | D |
| 13 | 20 | 60.6% | D |
| 14 | 19 | 57.6% | F |
| 15 | 18 | 54.5% | F |
| 16 | 17 | 51.5% | F |
| 17 | 16 | 48.5% | F |
| 18 | 15 | 45.5% | F |
| 19 | 14 | 42.4% | F |
| 20 | 13 | 39.4% | F |
| 21 | 12 | 36.4% | F |
| 22 | 11 | 33.3% | F |
| 23 | 10 | 30.3% | F |
| 24 | 9 | 27.3% | F |
| 25 | 8 | 24.2% | F |
| 26 | 7 | 21.2% | F |
| 27 | 6 | 18.2% | F |
| 28 | 5 | 15.2% | F |
| 29 | 4 | 12.1% | F |
| 30 | 3 | 9.1% | F |
| 31 | 2 | 6.1% | F |
| 32 | 1 | 3.0% | F |
| 33 | 0 | 0.0% | F |
The math: score = right answers ÷ 33 × 100. Each question is 100 ÷ 33 = 3.03 percentage points, so every wrong answer takes 3.03 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.