Scores Out of 21 as Percentages
Every possible score on a 21-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 |
|---|---|---|---|
| 0/21 | 0% | F | 21 |
| 1/21 | 4.8% | F | 20 |
| 2/21 | 9.5% | F | 19 |
| 3/21 | 14.3% | F | 18 |
| 4/21 | 19% | F | 17 |
| 5/21 | 23.8% | F | 16 |
| 6/21 | 28.6% | F | 15 |
| 7/21 | 33.3% | F | 14 |
| 8/21 | 38.1% | F | 13 |
| 9/21 | 42.9% | F | 12 |
| 10/21 | 47.6% | F | 11 |
| 11/21 | 52.4% | F | 10 |
| 12/21 | 57.1% | F | 9 |
| 13/21 | 61.9% | D | 8 |
| 14/21 | 66.7% | D | 7 |
| 15/21 | 71.4% | C | 6 |
| 16/21 | 76.2% | C | 5 |
| 17/21 | 81% | B | 4 |
| 18/21 | 85.7% | B | 3 |
| 19/21 | 90.5% | A | 2 |
| 20/21 | 95.2% | A | 1 |
| 21/21 | 100% | A | 0 |
Grade a 21-Question Test
Use the Test Grade Calculator to interactively grade any 21-question test. Enter the number of questions wrong and get your score instantly, plus a printable grading-scale table.