CalcGrade · Free Calculator Tool

Quiz Calculator

Calculate your quiz percentage and letter grade, then test different score scenarios to see how a better or lower result could change your performance. Use question counts or points—no sign-up required.

Calculate Your Quiz Grade

Choose how your quiz is scored and enter your results below.

✓ Calculated in your browser

Total Questions How many questions were on the quiz?

Questions Wrong Enter the number of incorrect answers.

Points Possible The maximum points available on the quiz.

Points Earned The points you received.

Advanced Grading Options

Grading Scale

Passing Threshold (%) Used to label the result as pass or below passing.

Custom Grade Cutoffs Enter highest-to-lowest cutoffs, for example A:90,B:80,C:70,D:60,F:0.

Your Quiz Result

Questions mode

Quiz Percentage

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Letter Grade

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Correct Answers —

What-If Score Comparison

Compare your current result with a different possible quiz score.

Try a different number of wrong answers Enter a hypothetical score to see its grade.

Quiz Grade Chart

See how different answer counts translate into percentages and letter grades.

The highlighted row shows your current score. Your instructor or school may use a different grading scale.

How to Use the Quiz / What-If Calculator

Use this calculator after a quiz, practice test, classroom assessment, or points-based assignment. It gives you your current percentage and helps you explore possible outcomes before your next assessment.

1. Choose a scoring method

Select Questions if every question has the same value. Choose Point System when questions have different point values or partial credit is possible.

2. Enter your score

Enter the total questions and wrong answers, or enter points earned and points possible. Check your entries before calculating.

3. Calculate and compare

Click Calculate Grade to reveal your result. Use What-If to test another possible score and compare the percentage and letter grade.

How Is a Quiz Grade Calculated?

When every question has equal value

First, subtract the number of wrong answers from the total number of questions. Divide the correct answers by the total questions, then multiply by 100.

Quiz Percentage = (Correct Answers ÷ Total Questions) × 100

Example: If a quiz has 20 questions and you get 3 wrong, you answered 17 correctly. Your percentage is (17 ÷ 20) × 100 = 85%.

When questions have different point values

Use the points method if some questions are worth more than others or your instructor awards partial credit.

Quiz Percentage = (Points Earned ÷ Points Possible) × 100

Example: If you earn 42 points out of 50, your quiz percentage is (42 ÷ 50) × 100 = 84%.

What Does a What-If Quiz Score Mean?

A What-If score is a hypothetical result, not a change to a grade already recorded by your teacher. It lets you explore how a different number of correct answers or points earned would affect the quiz percentage.

Use scenarios to plan your next steps

Compare a lower, similar, or higher score to understand how much each result changes your percentage.
Estimate how many additional correct answers could move your quiz into another grade range.
Check whether a target percentage is realistic for the number of questions on your next quiz.
Use the result to identify topics that may need more review before another assessment.

Remember that this tool calculates one quiz result. It does not automatically predict your overall course grade, because course grades may include homework, exams, projects, participation, and category weights.

Understanding Quiz Percentages and Letter Grades

A percentage represents the portion of available points or questions you earned. A letter grade groups that percentage into a grade range. The exact cutoffs depend on your school or instructor.

Letter Grade	Common Percentage Range	General Description
A	90–100%	Excellent
B	80–89.99%	Good
C	70–79.99%	Satisfactory
D	60–69.99%	Needs improvement
F	Below 60%	Below the common passing range

This is a general example, not a universal grading policy. Use the advanced settings to select a different scale, and check your syllabus for your class's official cutoffs.

Practical Ways to Learn From Your Quiz Results

Review more than the final percentage

Your score tells you how many points you earned, but reviewing the questions you missed can show what to study next. Look for patterns rather than focusing only on the letter grade.

Sort mistakes by topic: Notice whether missed questions came from one chapter, concept, or type of problem.
Check the instructions: Review whether you misunderstood a question, missed a detail, or need to practice a particular skill.
Practice with feedback: Try a few new questions on the topics you found difficult, then check your reasoning.
Plan a manageable review session: Break a large topic into smaller sections and revisit them over multiple study sessions.
Ask for clarification: If an answer or grading decision is unclear, ask your instructor to explain the rubric or marking policy.

Frequently Asked Questions

How do I calculate my quiz grade?

For equal-value questions, subtract wrong answers from total questions, divide correct answers by total questions, and multiply by 100. If questions have different values, divide points earned by points possible and multiply by 100.

What is a What-If quiz calculator?

A What-If calculator lets you enter a hypothetical score and see the percentage and letter grade it would produce. It helps you compare possible outcomes without changing your recorded quiz result.

Can I use this calculator if quiz questions have different point values?

Yes. Select Point System and enter the points you earned and the total points possible. This method also works when your instructor gives partial credit.

Does the calculator show my result before I click Calculate Grade?

No. The result, What-If comparison, and quiz grade chart appear after you submit valid quiz information using the Calculate Grade button.

Can I calculate a letter grade such as A, B, or C?

Yes. The calculator converts your percentage into a letter grade using the selected grading scale. You can choose the standard scale, a plus/minus scale, or enter custom cutoffs.

What percentage is a passing quiz grade?

Passing thresholds vary by school, course, and instructor. A 60% threshold is used as the default example here, but you can change it in Advanced Grading Options to match your class policy.

Does a higher quiz score automatically raise my overall class grade?

Not necessarily. The effect on your course grade depends on how much the quiz is worth and how your instructor calculates the course total. Use a weighted or final grade calculator for course-level estimates.

Are my quiz scores saved or shared?

This calculator performs its calculations in your browser. It does not need an account or send the scores to a calculator server. If you leave or refresh the page, the entered values may be cleared.

Can I use it for tests and exams too?

Yes. You can use the Questions method for equal-value questions or the Point System method when each question has a different point value. It works for quizzes, tests, practice exams, and similar assessments.

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Understand Your Quiz Score and Plan Ahead

Calculate your result, compare possible scores, and use what you learn to prepare for your next assessment. For an overall course estimate, explore the other grade tools available on CalcGrade.