20 Question Test Grade Calculator
Find your percentage and letter grade on a 20-question test from the number of questions you got wrong.
I know the number of
Your score
—
Edit grade boundaries
The lowest percentage for each grade. Everything below the last one is the lowest grade.
Grades for every result
| Wrong | Correct | Score | Grade |
|---|
How much is each question worth?
On a 20-question test every question is worth 100 ÷ 20 = 5%. Each wrong answer lowers your score by 5 percentage points.
20 question test grading scale
| 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 |
| 20 | 0 | 0% | F |
Grades use the standard US scale (A+ from 97%, F below 60%). Rows below 50% are left out — the calculator shows them all.
How many can you miss?
- A− or better (90%): up to 2 wrong
- B− or better (80%): up to 4 wrong
- C− or better (70%): up to 6 wrong
- D− or better (60%): up to 8 wrong
Frequently asked questions
How many questions can you miss on a 20-question test to pass?
With 60% as the passing mark you can miss up to 8 questions and still pass with a D−. If your course needs 70%, you can miss up to 6.
What is 1 wrong on a 20-question test?
19 out of 20 is 95% — a grade of A on the standard scale.
How many can I get wrong to get an A on a 20-question test?
For an A− (90%) you can miss up to 2; for a solid A (93%) up to 1.