EZ Graders — Free Online EZ Grader Calculator
Whether you search for ez grader (ez graders) or ezgrader, this free calculator works the same way — no download, no sign-up, instant results. Enter the total number of questions and wrong answers. Get your percentage score and letter grade in seconds. No cost. Always free.
Trusted by teachers and students across the US, UK, Canada, and Australia.
What percentage is a passing grade in the US?
In most US schools, a passing grade starts at 60%, which is a D on the standard letter grading scale. Many college courses require a C (70%) or higher to count toward a degree. Always check your school’s grading policy, as cutoffs can vary by institution. (Source: Academic Grading in the United States — Wikipedia)
EZ Graders (Ez Grader) Chart — Full Grading Scale
This grading chart shows every percentage score and its matching letter grade. Use it alongside the calculator above or print it for your classroom wall.
| Percentage | Letter Grade | GPA Value |
|---|---|---|
| 97 – 100% | A+ | 4.0 |
| 93 – 96% | A | 4.0 |
| 90 – 92% | A- | 3.7 |
| 87 – 89% | B+ | 3.3 |
| 83 – 86% | B | 3.0 |
| 80 – 82% | B- | 2.7 |
| 77 – 79% | C+ | 2.3 |
| 73 – 76% | C | 2.0 |
| 70 – 72% | C- | 1.7 |
| 67 – 69% | D+ | 1.3 |
| 63 – 66% | D | 1.0 |
| 60 – 62% | D- | 0.7 |
| Below 60% | F | 0.0 |
According to the US Department of Education, the letter grade system is the most widely used academic assessment method across American K-12 schools and higher education institutions. The standard scale converts percentage scores into letter grades from A to F, with A starting at 90% and F beginning below 60%.
How to Read This Grading Chart
Find the percentage your student scored. Match it to the letter grade column. That letter tells you where the score falls on the standard grading scale. GPA values on the right show how each grade affects a cumulative average.
What is EZ Graders (Ez Grader)?
EZ Graders (EZ Grader) is a grading tool that teachers have used for generations.
The original version was a physical slide chart. A teacher held a small card against a printed scale. They slid it to match the number of questions on the test. Then they read off percentage scores and letter grades for every possible number of wrong answers.
That slide chart sat in classroom desks across the US for decades. It was simple, fast, and worked every time.
Today, an online grading calculator does the same job in under five seconds. You type in the total number of questions. You enter the number of wrong answers. The tool returns the percentage score and letter grade right away.
Teachers use them for quizzes, tests, and homework assignments. Students use them to check scores before report cards come out. Parents use them to track their children’s academic performance without doing the math themselves.
What did teachers use before online grading tools?
Teachers used a physical slide chart commonly called an EZ Grader (ezgrader). It matched the number of questions on a test to the number of wrong answers and showed the percentage score and letter grade for each result. Online grading calculators replaced them because they are faster, always accessible, and work for any number of questions.
How to Use the Free EZ Graders (Ez Grader) Calculator
This takes under 10 seconds. Here is the exact process:
- Enter the total number of questions on the test or quiz.
- Enter the number of wrong or missed answers.
- Read the percentage score shown instantly below.
- Check the letter grade next to the percentage.
- Toggle the grade chart to see scores for every possible number of wrong answers.
- Turn on half points** if the test uses partial credit scoring.
That is the entire process. No formulas. No manual calculation. No errors.
What is the formula used to calculate a test score?
The formula is: Percentage = (Correct Answers divided by Total Questions) multiplied by 100. For example, 18 correct out of 20 total gives 90%, which is an A on the standard US grading scale. The calculator runs this formula automatically and matches the result to the letter grading scale.
Who Uses EZ Graders (Ezgrader)?
Teachers and Professors
Teachers spend an average of 5 hours per week grading student work. That equals 140 hours over a 28-week school year — and that figure does not count time spent on report cards or feedback comments. *(Source: EssayGrader.ai — How Much Time Do Teachers Spend Grading?)*
A fast, accurate score conversion chart cuts that time down. Enter the total number of questions once. Then read each student’s score from the chart without running a single calculation. It works for any test size and any class size.
The half points option supports teachers who give partial credit on essay or short-answer questions. The grade chart toggle lets you print a ready-made score sheet for the entire paper.
Can teachers use this as a grading tool for large classes?
Yes. Enter the total number of questions once. Then use the grade chart to read scores for every student paper. Each result takes a few seconds, regardless of class size.
High School and College Students
Got your paper back and not sure what the score means?
Type in the total number of questions and the number you got wrong. See your percentage and letter grade right away. You know exactly where you stand before the teacher updates the gradebook.
This also helps before an exam. You can check what score you need on an upcoming test to bring up your average grade. Pair it with the Final Grade Calculator on this site for a full picture.
How do I check my own test score?
Enter the total number of questions and the number you answered wrong. The calculator shows your percentage score and the letter grade that matches it in under a second.
Parents
Parents helping their children stay on top of grades no longer need to work through the math themselves.
Type in the quiz or test results. See the percentage and letter grade right away. The tool works on any phone, tablet, or computer without downloading anything.
Grading Calculator with Percentages
This calculator handles tests of any length. Here are the most common test sizes with a quick score reference.
10 Questions Grading Chart
| Wrong number of questions | Percentage | Grade |
|---|---|---|
| 1 | 90% | A |
| 2 | 80% | B |
| 3 | 70% | C |
| 4 | 60% | D |
| 5 or more. | 0% | F |
15 Questions Grading Chart
| Wrong number of questions | Percentage | Grade |
|---|---|---|
| 1 | 93.3% | A |
| 2 | 86.7% | B+ |
| 3 | 80% | B |
| 4 | 73.3% | C |
| 5 | 66.7% | D+ |
| 6 | 60% | D |
| 7 or more | 0% | F |
20 Questions Grading Chart
| Wrong number of questions | Percentage | Grade |
|---|---|---|
| 1 | 95% | A |
| 2 | 90% | A- |
| 3 | 85% | B |
| 4 | 80% | B- |
| 5 | 75% | C |
| 6 | 70% | C- |
| 7 | 65% | D |
| 8 | 60% | D- |
| 9 or more | 55% | F |
25 Questions Grading Chart
| Wrong number of questions | Percentage | Grade |
|---|---|---|
| 1 | 96% | A |
| 2 | 92% | A- |
| 3 | 88% | B+ |
| 4 | 84% | B |
| 5 | 80% | B- |
| 6 | 76% | C |
| 7 | 72% | C- |
| 8 | 68% | D+ |
| 9 | 64% | D |
| 10 | 60% | D- |
| 11 or more | 56% | F |
What grade is getting 1 wrong on a 10-question test?
Getting 1 wrong on a 10-question test gives a score of 90%, which is an A on the standard US grading scale.
Why Teachers and Students Choose Ez Graders
Completely Free
No subscription. No payment. No account needed. This grading calculator is free today and stays free.
Results in Under a Second
Type your numbers and get the percentage score and letter grade right away. No loading screens. No waiting.
Works on Every Device
Phone, tablet, or desktop computer. The tool adjusts to any screen without losing a single feature.
Accurate on Every Test
Built on the standard grading scale used in schools across the US, UK, Canada, and Australia. According to the National Center for Education Statistics (NCES), the letter grade system remains the most widely used academic assessment method in American education from K-12 through college.
Half Points Supported
Some tests give partial credit. The half points toggle handles those scores accurately without rounding errors.
Frequently Asked Questions
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