How do I calculate a quiz grade from wrong answers?

Enter the total number of quiz questions, choose Wrong, and type the number of wrong answers. The calculator subtracts wrong answers from the total before converting the quiz score to a percentage.

Can I use correct answers instead of wrong answers?

Yes. Choose Correct and enter the number of correct responses on the quiz.

Can this handle a point-based quiz?

Yes. Choose Points, then enter points earned and points possible. This works for short quizzes that use partial credit.

Is this different from the test grade calculator?

Yes. The quiz grade calculator is optimized for short quiz and quick-check workflows. The test grade calculator is focused on point-based test scores.

Are quiz scores uploaded or saved to an account?

No. Calculations run in your browser. GradeTally does not require an account and does not upload student grades.

Quiz Grade Calculator

Score short quizzes and classroom quick checks by total questions, wrong answers, correct answers, or points earned. The calculator shows a percentage, letter grade, answer counts, and pass/fail status without uploading grades.

Short quiz scoring

Score a quick quiz by questions or points. The calculation stays in this browser.

Quiz input

Total questionsWrong answers

Passing grade (%)

Grade scale

A starts atB starts atC starts atD starts at

Score

90%

Letter

Correct

Wrong

Pass at a 60% threshold.

Actions

No account, no server upload, and no student grade tracking.

Formula

For answer counts, quiz percentage = correct answers / total questions x 100. For point-based quizzes, quiz percentage = points earned / points possible x 100.

How to use the quiz grade calculator

Choose whether the quiz is scored by wrong answers, correct answers, or points earned.
Enter the total questions or points possible for the quiz.
Enter the wrong answers, correct answers, or points earned for the selected mode.
Adjust the passing grade and grade scale if your class uses different cutoffs.
Review the percentage, letter grade, correct or earned amount, wrong or missed amount, and pass/fail result.

Formula

For answer-count quizzes, percentage = correct answers / total questions x 100. For point-based quizzes, percentage = points earned / points possible x 100.

Quiz-specific example

For a 10-question exit quiz with 1 wrong answer, the score is (10 - 1) / 10 x 100 = 90%, which maps to A on the default scale.

Common mistakes

Mixing up wrong answers and correct answers on a short quiz.
Entering points earned when the calculator is set to an answer-count mode.
Using total questions when the quiz is actually scored with partial-credit points.
Assuming a quick quiz score includes late penalties, curves, or dropped items.

Browser-local privacy note

Quiz inputs are calculated in your browser. GradeTally does not require an account, upload quiz scores, or track student grades.

FAQ

How do I calculate a quiz grade from wrong answers?: Enter the total number of quiz questions, choose Wrong, and type the number of wrong answers. The calculator subtracts wrong answers from the total before converting the quiz score to a percentage.
Can I use correct answers instead of wrong answers?: Yes. Choose Correct and enter the number of correct responses on the quiz.
Can this handle a point-based quiz?: Yes. Choose Points, then enter points earned and points possible. This works for short quizzes that use partial credit.
Is this different from the test grade calculator?: Yes. The quiz grade calculator is optimized for short quiz and quick-check workflows. The test grade calculator is focused on point-based test scores.
Are quiz scores uploaded or saved to an account?: No. Calculations run in your browser. GradeTally does not require an account and does not upload student grades.

Related calculators

GradeTally is an independent planning tool and is not affiliated with any school, college, university, or education department. Calculations are for planning purposes only — confirm official GPA rules with your school counselor, registrar, or official academic policy.