Quiz Score Calculator is designed for the exact search intent behind “quiz score calculator”. Calculate a quiz or test percentage from correct answers and total questions, with optional missed-question interpretation. Calculate a quiz or test percentage from correct answers and total questions, with optional missed-question interpretation. Score formula percentage = correct answers ÷ total questions × 100 . Incorrect answers If every question has one scored outcome, incorrect = total − correct. Rounding Keep full precision until the final display so rounding does not distort borderline scores. Worked example: 18 correct out of 20 gives 18/20×100 = 90%. Common practical uses include Check quiz results; Convert raw scores to percentages; Verify classroom spreadsheets; Compare practice tests. Important limitations: Weighted questions need a weighted-grade method. Partial credit changes the simple formula. A percentage alone does not determine a letter grade without a grading scale. Key questions this page should answer include: How do I calculate a quiz percentage? Divide correct answers by total questions and multiply by 100. What is 18 out of 20? 90%. How many did I miss? Total questions minus correct answers. Does this calculate a letter grade? Only if a grading scale is separately supplied. What if questions have different point values? Use a points or weighted-grade calculation instead. The page should stay focused on this differentiator: Score formula. The tool should appear before the explanatory copy so a visitor can complete the task immediately, then use the supporting content to verify the method and understand the result. The explanation should keep terminology consistent with the calculator or converter interface, because a mismatch between labels in the tool and labels in the content can create confusion and weaken search-intent alignment. Where the calculation or transformation has edge cases, the page should state them directly instead of implying that every input is valid. The worked example should mirror the real inputs accepted by the tool and show enough arithmetic or transformation logic for the result to be independently checked.
How to use this tool
Score formula
percentage = correct answers ÷ total questions × 100.
Incorrect answers
If every question has one scored outcome, incorrect = total − correct.
Rounding
Keep full precision until the final display so rounding does not distort borderline scores.
Examples
Worked example
18 correct out of 20 gives 18/20×100 = 90%.
Common use cases
- Check quiz results
- Convert raw scores to percentages
- Verify classroom spreadsheets
- Compare practice tests
Frequently asked questions
How do I calculate a quiz percentage?
Divide correct answers by total questions and multiply by 100.
What is 18 out of 20?
90%.
How many did I miss?
Total questions minus correct answers.
Does this calculate a letter grade?
Only if a grading scale is separately supplied.
What if questions have different point values?
Use a points or weighted-grade calculation instead.