Grading Calculator (EZ Grader)

Q: What grade is 27 out of 40?

27 out of 40 equals 67.5% , which is usually a D+ or C- depending on the grading scale.

Q: What is the most common passing grade?

Most schools use 60% , but some require 70% .

Q: Is 82% a B grade?

In most U.S. grading systems, 82% is a B .

This grading calculator helps you find test scores in seconds. Enter total questions and wrong answers to get the percentage.

Test Grading Calculator (EZ Grader)

The calculator works instantly in your browser. No signup. No data saved.

Percentage Calculators GPA Calculators

About Owner

Henry Ethan

Henry Ethan is the owner of Grading Calculators Hub and a mathematics teacher with over 15 years of classroom experience. He has worked closely with students across different grade levels, helping them understand grading systems, scores, and academic performance. Every calculator and explanation on this site reflects real teaching experience and practical classroom needs.

How This EZ Grading Calculator Works

Using this grading calculator is simple:

Enter the total number of questions on the test
Enter the number of wrong answers
The calculator finds the correct answers
It shows the percentage score.

You can also:

Show or hide decimals

View a quick grading chart

Print or share the result

The formula used is:

Percentage = \frac{Correct Answers}{Total Questions} \times 100

This is the same formula taught in middle school and high school math.

EZ Grade Calculator Examples

Here are a few real examples:

13 wrong out of 40 → 27 correct → 67.5%

25 wrong out of 100 → 75 correct → 75%

3 wrong out of 50 → 47 correct → 94%

10 wrong out of 20 → 10 correct → 50%

These examples help you see how wrong answers affect the final score.

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Teachers

Teachers use this easy grade to save time while checking quizzes and exams. It removes manual math and reduces grading errors.

Students

Students use it to check practice tests and homework. It helps them see how many wrong answers still give a passing score.

Parents

Parents use this tool to understand test results and track academic progress clearly.

Key Features of the EZ Grader

Works with any test size (5 to 200+ questions)
Instant percentage and letter grade
Optional decimal or rounded scores
Quick grading chart for reference
Mobile-friendly on all devices
Printable and shareable results

Limitations of This Grade Calculator

Does not support weighted grading
Does not calculate curved scores
Does not handle partial credit
For those cases, use the related calculators above.

Passing Grades and School Rules

Passing scores are not the same everywhere.

Common cutoffs:

60% passing in many schools
70% required in stricter systems

This EZ grader shows the raw percentage.
Your school decides if that score is pass or fail.

30 out of 50 = 60% → passing in some schools

35 out of 50 = 70% → passing where higher cutoffs apply

When to Use Other Calculators

This grade calculator is best for tests based on wrong answers.

Use other tools when needed:

For basic percent math, use the Percentage Calculator

For simple math checks, use the Simple Calculator

For long-term academic results, use the Cumulative GPA Calculator

To convert GPA into letters, use the GPA to Letter Grade Converter

For weighted exams or assignments, use the Weighted Grade Calculator

For final course results, use the Final Grade Calculator

To calculate GPA directly, use the GPA Calculator

For advanced math, use the Scientific Calculator

FAQs

It uses total questions and wrong answers to calculate the percentage score using a standard math formula.

27 out of 40 equals 67.5%, which is usually a D+ or C- depending on the grading scale.

Most schools use 60%, but some require 70%.

In most U.S. grading systems, 82% is a B.

Yes. The calculator works with any number of questions.

No. All calculations run in your browser. Nothing is saved or shared.

Conclusion

This grade calculator is a fast and reliable way to check test scores. Teachers save time. Students reduce stress. Parents get clear answers. If you need quick, accurate grading without manual math, this EZ Grader does the job.