EZ Grader is an easy online grading calculator that helps you quickly grade tests and quizzes. Enter the total number of questions and wrong answers to instantly see percentage scores and letter grades.
-
- {{grade.letter}}
- -
-
- {{grade.letter}}
- -
| Wrong | Right | Grade |
|---|---|---|
| {{answers.wrong}} | {{answers.total - answers.wrong}} | {{answers.percentage}}% = {{getLetterForPercentage(answers.percentage)}} |
How the EZ Grader Works
- Enter the total number of questions on the test or quiz.
- Enter how many questions were answered incorrectly.
- Instantly see the percentage score and letter grade.
EZ Grader replaces printed grading charts by calculating exact percentages for any number of questions – no formulas, spreadsheets, or grading charts required.
EZ Grader Examples
| Total Questions | Wrong Answers | Correct Answers | Percentage Score | Letter Grade |
|---|---|---|---|---|
| 20 | 3 | 17 | 85% | B |
| 25 | 4 | 21 | 84% | B |
| 50 | 7 | 43 | 86% | B |
| 75 | 10 | 65 | 87% | B+ |
| 100 | 12 | 88 | 88% | B+ |
EZ Grader – Tips & Tricks
✅ Reuse total questions: Change only the wrong-answer count to grade faster.
✅ Short tests magnify errors: One missed question affects percentages more on small quizzes.
✅ Math vs policy: EZ Grader calculates percentages; letter grades follow your school’s rules.
Standard Test Grading Scale
| Percentage Range | Letter Grade | GPA | Commentary |
|---|---|---|---|
| 97–100% | A+ | 4.0 | Excellent |
| 93–96% | A | 4.0 | Excellent |
| 90–92% | A− | 3.7 | Very good |
| 87–89% | B+ | 3.3 | Very good |
| 83–86% | B | 3.0 | Good |
| 80–82% | B− | 2.7 | Good |
| 77–79% | C+ | 2.3 | Okay |
| 73–76% | C | 2.0 | Okay |
| 70–72% | C− | 1.7 | Okay |
| 67–69% | D+ | 1.3 | Below average |
| 63–66% | D | 1.0 | Below average |
| 60–62% | D− | 0.7 | Poor |
| Below 60% | F | 0.0 | Failing |
Custom Grade Scale
By default, EZ Grader uses a standard letter grading scale (for example, 90–100% = A, 80–89% = B). Some schools and districts use different percentage cutoffs.
If your grading policy differs, you can apply your own thresholds using the percentage score shown. For example:
| Percentage Range | Letter Grade |
|---|---|
| 93–100% | A |
| 85–92% | B |
| 75–84% | C |
| 65–74% | D |
| Below 65% | F |
This allows EZ Grader to align with your specific grading policy without changing how scores are calculated.
Frequently Asked Questions
What is an EZ Grader?
An EZ Grader is a grading calculator that converts the number of wrong answers on a test into a percentage score and letter grade.
How do I use an EZ Grader?
Enter the total number of questions and the number of wrong answers. The EZ Grader instantly calculates the percentage score and letter grade.
Is EZ Grader the same as a grading chart?
Yes, but more flexible. A printed grading chart works only for fixed question counts, while EZ Grader works for any number of questions.
Can I use EZ Grader as a grading calculator for quizzes and exams?
Yes. EZ Grader works for quizzes, tests, and exams as long as each question has equal value.
How many questions can I miss and still get an A?
It depends on the total number of questions and your grading scale. EZ Grader shows the exact percentage so you can compare it to your A cutoff.
Why does one wrong answer lower the grade more on small quizzes?
On shorter quizzes, each question represents a larger percentage of the total score, so missing one question has a greater impact.
Does EZ Grader round grades?
EZ Grader calculates exact percentages. Any rounding follows your school’s grading policy.
Can EZ Grader be used with a custom grading scale?
Yes. EZ Grader calculates the percentage score, and you can apply your own letter grade cutoffs.
Is EZ Grader good for weighted or point-based grading?
No. EZ Grader is designed for grading based on total questions, not weighted or point-based systems.
Can students use EZ Grader?
Yes. Students often use EZ Grader to estimate scores, but final grades depend on the teacher’s grading policy.
Related Calculators
If you’re using the EZ Grader, you may also find these calculators helpful:
- Final Grade Calculator – to figure out what you need on your final exam to reach a desired grade.
- GPA Calculator – to see how class grades affect your overall GPA.
- Grade Percentage Calculator – for weighted categories like quizzes, homework, and exams.
Together, these tools give a complete picture of academic performance.