Grade papers in seconds! Enter the number of questions and wrong answers to instantly calculate scores, percentages, and letter grades. Generate complete grading charts for any test size with customizable grading scales.
Enter total questions on test/quiz
Questions answered incorrectly
Choose your grading scale
Enter the total number of questions and click Calculate to see the complete grading chart
An EZ Grader (Easy Grader) is a simple tool that teachers use to quickly convert test scores into letter grades and percentages. Originally a physical grading wheel or slide chart, EZ Graders have been helping teachers grade papers efficiently for decades. Our online version provides the same instant grading capability with additional features like customizable grading scales and printable charts.
A student takes a 20-question quiz and gets 3 questions wrong. Let's calculate their grade:
Percentage = 1720 × 100
Percentage = 0.85 × 100 = 85%
Grade: B
(85% falls in the B range: 80-89%)
Result: With 17 correct out of 20 questions, the student scores 85% and earns a B grade.
A teacher uses a strict grading scale for a 50-question test. A student misses 8 questions:
Percentage = 4250 × 100
Percentage = 0.84 × 100 = 84%
Grade: C
(84% falls in the C range on strict scale: 77-84%)
Result: With 42 correct out of 50 questions, the student scores 84%. On a strict grading scale, this earns a C grade (Note: this would be a B on a standard scale).
A student aces a 35-question exam with zero wrong answers:
Percentage = 3535 × 100
Percentage = 1.00 × 100 = 100%
Grade: A
(Perfect score on any grading scale!)
Result: With all 35 questions correct, the student achieves a perfect 100% and earns an A grade - excellent work!
| Grade | Standard Scale | Strict Scale | Lenient Scale |
|---|---|---|---|
| A | 90-100% | 93-100% | 88-100% |
| B | 80-89% | 85-92% | 78-87% |
| C | 70-79% | 77-84% | 68-77% |
| D | 60-69% | 70-76% | 58-67% |
| F | Below 60% | Below 70% | Below 58% |
The most commonly used grading scale in U.S. schools. Balanced and fair for most situations.
Higher standards requiring better performance for each grade. Often used in honors or AP courses.
More forgiving standards, allowing students to achieve higher grades with lower percentages.
Each question worth 10%
Each question worth 5%
Each question worth 4%
Each question worth 2%
Generate and print grading charts for your most common test sizes. Keep them at your desk for instant reference while grading papers.
Match your grading scale to course difficulty. Use strict scales for advanced courses and lenient scales for challenging new material.
When grading, mark only incorrect answers. Then simply count the X's and use the EZ Grader - faster than counting correct answers!
While EZ Grader is accurate, always verify your count of wrong answers. A simple miscount can affect the grade significantly.
Our EZ Grader is 100% accurate for all calculations. It uses precise mathematical formulas to convert scores to percentages and applies the selected grading scale consistently. The calculator eliminates human error in calculations, though you should still verify your count of wrong answers to ensure accuracy.
This EZ Grader assumes all questions are worth equal points. If your test has weighted questions (some worth more points than others), you'll need to calculate based on total points rather than number of questions. For example, if a test has 80 total points, treat it as 80 "questions" and count how many points were lost as "wrong answers."
Standard scale (A≥90%): Most common in U.S. schools; Strict scale (A≥93%): Higher standards, often used in honors/AP courses or colleges; Lenient scale (A≥88%): More forgiving, good for difficult subjects or younger students. The scale you choose depends on your school's policy, course difficulty, and educational philosophy.
Yes! Click the "Print Grading Chart" button to print a reference chart for your test. The printed version includes the grading scale legend and complete chart showing all possible scores. Many teachers print charts for common test sizes (10, 20, 25, 50 questions) and keep them handy for quick grading.
This EZ Grader shows basic letter grades (A, B, C, D, F). If your school uses plus/minus grading, you can still use the percentage to determine the specific grade. Common plus/minus breakdowns: A (93-100%), A- (90-92%), B+ (87-89%), B (83-86%), B- (80-82%), and so on. Check your school's specific grading policy for exact ranges.
For tests with partial credit, calculate the total points earned vs. total points possible, then use those numbers as your inputs. For example, if a student earned 73 out of 85 points, treat it as 85 "total questions" with 12 "wrong" (85-73=12). The EZ Grader will calculate the percentage: 73/85 = 85.9%.
Our EZ Grader is a web-based calculator that works perfectly on mobile devices, tablets, and computers. You don't need to download an app - simply bookmark this page on your phone for instant access. The responsive design ensures it works smoothly on screens of all sizes.
Absolutely! Students can use the EZ Grader to: (1) Understand how their test score translates to a grade; (2) Calculate what they need on future tests; (3) See how one wrong answer affects their grade; (4) Verify their teacher's grading (though teachers are usually correct!). It's a great tool for students to understand grading and take ownership of their learning.
The EZ Grader is more than just a calculator - it's a time-saving tool that lets teachers focus on what matters most: teaching. By eliminating tedious grade calculations and reducing errors, you can spend more time providing meaningful feedback to students and less time crunching numbers.
Whether you're grading a quick 10-question quiz or a comprehensive 100-question final exam, our EZ Grader provides instant, accurate results with printable charts for reference. Bookmark this page, share it with fellow educators, and make grading the easiest part of your day!