Last updated October 13, 2026 · Report an error
Grading a test by hand means dividing correct answers by the total, then converting that percentage into a letter grade — two steps that are easy to combine into one.
This calculator takes your correct answer count and total questions, and gives you both the percentage score and the corresponding letter grade.
How it works
Enter the number of correct answers and the total number of questions. The tool divides the two to find a percentage, then applies the standard +/- letter grade scale to that percentage.
- Enter correct answers.
- Enter total questions.
- Click Calculate to see your results.
Examples
42 out of 50 correct
42 correct answers out of 50 questions is an 84% score, which falls in the B range.
Who should use it
- Quickly grading a test with equally-weighted questions.
- Double-checking a manually-calculated test score.
Industry applications
- K-12 and higher education
- Corporate training and certification testing
Advantages
- Combines percentage and letter grade into a single calculation.
- Also shows the number of incorrect answers for a quick double-check.
Limitations
- Assumes every question is worth the same, whole point value.
Common mistakes to avoid
- Using this for tests with weighted or partial-credit questions, where a simple correct/total ratio doesn't apply.
- Forgetting that the letter grade cutoffs here are a common convention, not a universal standard.
Best practices
- For tests with different point values per question, use the Weighted Grade Calculator instead, which accounts for that directly.
Tips
- If your test has extra credit questions, add them to "correct answers" but keep "total questions" at the original count — this will correctly show a score over 100%.
Frequently asked questions
Yes, with no signup and no limit on how many calculations you run.
No — this assumes each question is worth an equal, whole point. For weighted questions or partial credit, use the Weighted Grade Calculator instead.
The same standard US +/- scale as the Letter Grade Calculator — check your specific course's grading policy if it uses a different scale.