Test grade calculator
Got your test back? Enter the number of questions and how many you got wrong to see your percentage and letter grade. Switch to "Points" for tests where questions are worth different amounts.
- Free, no sign-up
- Works for US, Canada & Australia
- Private: grades stay on your device
How to work out a test score
Test score = (questions − wrong) ÷ questions × 100
How many can you miss?
| Questions | Max wrong for 90% (A-) | Max wrong for 80% (B-) | Max wrong for 70% (C-) |
|---|---|---|---|
| 10 | 1 | 2 | 3 |
| 20 | 2 | 4 | 6 |
| 25 | 2 | 5 | 7 |
| 30 | 3 | 6 | 9 |
| 40 | 4 | 8 | 12 |
| 50 | 5 | 10 | 15 |
| 100 | 10 | 20 | 30 |
On a 25-question test each question is worth 4%, so 3 wrong gives 88% (B+) rather than an A-.
What your test score means for your grade
How much one test moves your class grade depends on the weight of the tests category. If tests are 50% of your grade and you’ve taken four, one test is about 12.5% of the class. Enter your scores in the grade calculator to see the real effect.
Frequently asked questions
How do I calculate my test grade?
Subtract the wrong answers from the total questions, divide by the total and multiply by 100. On a 25-question test with 4 wrong, you score 21 ÷ 25 × 100 = 84%.
What if questions are worth different points?
Switch to "Points" and enter the points you earned and the points possible instead.
How many can I miss and still get an A?
The table under the result shows how many correct answers you need for each letter grade on your test.
What about partial credit?
Use "Points" mode and enter half points, for example 21.5 out of 25.
Is 80% a good test score?
80% is a B- on the standard US scale. It is above average in most classes.