What Is an Easy Grader?
An easy grader is a simple but powerful tool used by teachers, professors, and educators to quickly convert a raw test score into a percentage and assign the appropriate letter grade. Instead of performing division by hand for every paper in a stack, you simply enter the total number of questions and the number wrong — the easy grader does the rest in milliseconds.
Our online easy grader at EasyGrader.org takes this one step further by providing a live-updating result, a full grading reference table, multiple grading scale options, and a printable output — all completely free and with no account required.
Whether you are a primary school teacher grading spelling quizzes or a university professor scoring multiple-choice exams, this easy grader for teachers adapts to your needs instantly.
How the Easy Grader Calculator Works
Using the easy grader calculator takes less than five seconds. The formula is straightforward:
Score % = ((Total Questions − Wrong Answers) ÷ Total Questions) × 100
Enter Total Questions
Type the total number of questions on the test or quiz.
Enter Wrong Answers
Type the number of incorrect answers the student got.
Get Instant Grade
The score percentage and letter grade appear immediately.
Copy or Print
Share the result or print the full grading table for your class.
Example Calculation
A student answers a 40-question test and gets 6 questions wrong:
| Total Questions | Wrong Answers | Correct Answers | Score % | Grade |
|---|---|---|---|---|
| 40 | 0 | 40 | 100% | A |
| 40 | 2 | 38 | 95% | A |
| 40 | 6 | 34 | 85% | B |
| 40 | 10 | 30 | 75% | C |
| 40 | 16 | 24 | 60% | D |
| 40 | 17 | 23 | 57.5% | F |
Benefits of Using an Easy Grader for Teachers
Saves Grading Time
Grade an entire class set of papers in minutes. The easy grader calculates instantly — no calculator required.
Eliminates Math Errors
Manual division can lead to costly mistakes. Our easy grader calculator guarantees accurate results every time.
Printable Grade Sheet
Generate a full grading table you can print and attach to a test stack — your personal grading cheat sheet.
Flexible Grading Scales
Switch between standard, plus/minus, ten-point, or fully custom grading scales to match your school's policy.
Works on Any Device
Grade papers on your phone, tablet, or laptop. Our online easy grader is fully responsive and mobile-friendly.
100% Private & Free
No signup, no account, no data stored on our servers. All calculations happen instantly in your browser.
Standard US Grading Scale Reference
The most commonly used grading scale in US K-12 and higher education institutions assigns letter grades based on the following percentage ranges:
| Letter Grade | Percentage Range | GPA Points | Description |
|---|---|---|---|
| A | 90% – 100% | 4.0 | Excellent |
| B | 80% – 89% | 3.0 | Above Average |
| C | 70% – 79% | 2.0 | Average |
| D | 60% – 69% | 1.0 | Below Average |
| F | 0% – 59% | 0.0 | Failing |
Many schools and universities also use a plus/minus system (A+, A, A−, B+, etc.) for more granular scoring. Our easy grader calculator supports all these scales — simply select Plus/Minus in the grading scale toggle.