How to work it out
13 ÷ 25 = 0.52
0.52 × 100 = 52%
Divide the score by the total, then multiply by 100. 13 out of 25 means you got 13 of 25 right and missed 12, so each question is worth 4%.
15 out of 25 (60%) would move you up to a D−.
Every score out of 25
| Score | Percent | Letter grade |
|---|---|---|
| 25 out of 25 | 100% | A |
| 24 out of 25 | 96% | A |
| 23 out of 25 | 92% | A− |
| 22 out of 25 | 88% | B+ |
| 21 out of 25 | 84% | B |
| 20 out of 25 | 80% | B− |
| 19 out of 25 | 76% | C |
| 18 out of 25 | 72% | C− |
| 17 out of 25 | 68% | D+ |
| 16 out of 25 | 64% | D |
| 15 out of 25 | 60% | D− |
| 14 out of 25 | 56% | F |
| 13 out of 25 | 52% | F |
| 12 out of 25 | 48% | F |
| 11 out of 25 | 44% | F |
| 10 out of 25 | 40% | F |
| 9 out of 25 | 36% | F |
| 8 out of 25 | 32% | F |
| 7 out of 25 | 28% | F |
| 6 out of 25 | 24% | F |
| 5 out of 25 | 20% | F |
| 4 out of 25 | 16% | F |
| 3 out of 25 | 12% | F |
| 2 out of 25 | 8% | F |
| 1 out of 25 | 4% | F |
| 0 out of 25 | 0% | F |
Letter grades use the common US scale (93 and up is an A, 90–92 an A−, and so on, below 60 an F). Your school or teacher may use a different one.