EZ Grader Chart
20 Question Grade Chart
Find the percentage and letter grade for every number wrong on a 20-question test or quiz.
Formula
Grade % = (questions correct ÷ 20) × 100
Each question is worth 5 points.
| # Wrong | # Correct | Score | Grade |
|---|---|---|---|
| 0 | 20 | 100% | A+ |
| 1 | 19 | 95% | A |
| 2 | 18 | 90% | A- |
| 3 | 17 | 85% | B |
| 4 | 16 | 80% | B- |
| 5 | 15 | 75% | C |
| 6 | 14 | 70% | C- |
| 7 | 13 | 65% | D |
| 8 | 12 | 60% | D- |
| 9 | 11 | 55% | F |
| 10 | 10 | 50% | F |
| 11 | 9 | 45% | F |
| 12 | 8 | 40% | F |
| 13 | 7 | 35% | F |
| 14 | 6 | 30% | F |
| 15 | 5 | 25% | F |
| 16 | 4 | 20% | F |
| 17 | 3 | 15% | F |
| 18 | 2 | 10% | F |
| 19 | 1 | 5% | F |
| 20 | 0 | 0% | F |
Common questions
What grade is 1 wrong out of 20?
Missing 1 out of 20 questions is 19/20 = 95%, which is a A.
What grade is 3 wrong out of 20?
Missing 3 out of 20 is 17/20 = 85%, a B on a standard 10-point scale.
How many can you miss out of 20 and still pass?
To keep 60% (D-) you can miss up to 8 questions out of 20. For a 70% (C-) you can miss 6.
How do you calculate a test grade?
Divide the number correct by the total questions and multiply by 100. Example: 22 correct out of 25 = 22 ÷ 25 × 100 = 88%.