30 Question Test Grade Calculator
Find your percentage and letter grade on a 30-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 30-question test every question is worth 100 ÷ 30 = 3.33%. Each wrong answer lowers your score by 3.33 percentage points.
30 question test grading scale
| Wrong | Correct | Score | Grade |
|---|---|---|---|
| 0 | 30 | 100% | A+ |
| 1 | 29 | 96.67% | A |
| 2 | 28 | 93.33% | A |
| 3 | 27 | 90% | A− |
| 4 | 26 | 86.67% | B |
| 5 | 25 | 83.33% | B |
| 6 | 24 | 80% | B− |
| 7 | 23 | 76.67% | C |
| 8 | 22 | 73.33% | C |
| 9 | 21 | 70% | C− |
| 10 | 20 | 66.67% | D |
| 11 | 19 | 63.33% | D |
| 12 | 18 | 60% | D− |
| 13 | 17 | 56.67% | F |
| 14 | 16 | 53.33% | F |
| 15 | 15 | 50% | F |
| 30 | 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 3 wrong
- B− or better (80%): up to 6 wrong
- C− or better (70%): up to 9 wrong
- D− or better (60%): up to 12 wrong
Frequently asked questions
How many questions can you miss on a 30-question test to pass?
With 60% as the passing mark you can miss up to 12 questions and still pass with a D−. If your course needs 70%, you can miss up to 9.
What is 1 wrong on a 30-question test?
29 out of 30 is 96.67% — a grade of A on the standard scale.
How many can I get wrong to get an A on a 30-question test?
For an A− (90%) you can miss up to 3; for a solid A (93%) up to 2.