How it works
How to calculate it
Subtract wrong answers from total questions. Divide correct answers by total questions and multiply by 100. The chart repeats this for every possible number wrong.
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Grade a test instantly and generate a complete score chart for every possible number wrong.
Enter total questions and the selected student’s wrong answers.
| Wrong | Correct | Score | Grade |
|---|
How it works
Subtract wrong answers from total questions. Divide correct answers by total questions and multiply by 100. The chart repeats this for every possible number wrong.
Worked example
On a 50-question test with 4 wrong answers, the student has 46 correct. The score is 46 ÷ 50 × 100 = 92%, typically an A−.
Use the calculator above to substitute your own numbers. Results update immediately.
Before you rely on the number
Common questions
Yes. Use your browser’s Print command. GradeKit includes a clean print layout and does not require a separate PDF download.
The current version uses a common U.S. plus/minus scale, published on the grading scale chart. Use the percentage column if your school has different cutoffs.
The interface supports up to 500 questions to keep the generated chart practical.
Related tools
Turn correct answers into a percentage and letter grade in one step.
Open tool →Compare the three common curving methods on the same score before you commit to one.
Open tool →The percentage range behind every letter grade, and what each one is worth on a 4.0 scale.