Scores Out of 28 as Percentages
Every possible score on a 28-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 |
|---|---|---|---|
| 0/28 | 0% | F | 28 |
| 1/28 | 3.6% | F | 27 |
| 2/28 | 7.1% | F | 26 |
| 3/28 | 10.7% | F | 25 |
| 4/28 | 14.3% | F | 24 |
| 5/28 | 17.9% | F | 23 |
| 6/28 | 21.4% | F | 22 |
| 7/28 | 25% | F | 21 |
| 8/28 | 28.6% | F | 20 |
| 9/28 | 32.1% | F | 19 |
| 10/28 | 35.7% | F | 18 |
| 11/28 | 39.3% | F | 17 |
| 12/28 | 42.9% | F | 16 |
| 13/28 | 46.4% | F | 15 |
| 14/28 | 50% | F | 14 |
| 15/28 | 53.6% | F | 13 |
| 16/28 | 57.1% | F | 12 |
| 17/28 | 60.7% | D | 11 |
| 18/28 | 64.3% | D | 10 |
| 19/28 | 67.9% | D | 9 |
| 20/28 | 71.4% | C | 8 |
| 21/28 | 75% | C | 7 |
| 22/28 | 78.6% | C | 6 |
| 23/28 | 82.1% | B | 5 |
| 24/28 | 85.7% | B | 4 |
| 25/28 | 89.3% | B | 3 |
| 26/28 | 92.9% | A | 2 |
| 27/28 | 96.4% | A | 1 |
| 28/28 | 100% | A | 0 |
Grade a 28-Question Test
Use the Test Grade Calculator to interactively grade any 28-question test. Enter the number of questions wrong and get your score instantly, plus a printable grading-scale table.