Scores Out of 13 as Percentages
Every possible score on a 13-question test or assignment, converted to a percentage and letter grade. Click any row to see the full worked calculation.
| Score | Percentage | Letter Grade | Wrong |
|---|---|---|---|
| 0/13 | 0% | F | 13 |
| 1/13 | 7.7% | F | 12 |
| 2/13 | 15.4% | F | 11 |
| 3/13 | 23.1% | F | 10 |
| 4/13 | 30.8% | F | 9 |
| 5/13 | 38.5% | F | 8 |
| 6/13 | 46.2% | F | 7 |
| 7/13 | 53.8% | F | 6 |
| 8/13 | 61.5% | D | 5 |
| 9/13 | 69.2% | D | 4 |
| 10/13 | 76.9% | C | 3 |
| 11/13 | 84.6% | B | 2 |
| 12/13 | 92.3% | A | 1 |
| 13/13 | 100% | A | 0 |
Grade a 13-Question Test
Use the Test Grade Calculator to interactively grade any 13-question test. Enter the number of questions wrong and get your score instantly, plus a printable grading-scale table.