Education • Grades
EZ Grader
Quick grading calculator: enter total questions and wrong answers to get percentage and letter.
Correct
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Percentage
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Letter
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GPA
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Grading Table Chart
| Wrong | Correct | % | Letter |
|---|
Formula: % = (total−wrong)/total ×100. Letters: A+97 A93 A-90 B+87 B83 B-80 C+77 C73 C-70 D+67 D63 D-60.
How to use
- 1Enter the total number of questions on the test or assignment.
- 2Enter the number of wrong answers (or correct answers, if enabled).
- 3Your percentage score and letter grade appear instantly, ready to record in your gradebook.
Formula
Percentage = correct ÷ total × 100 • Letter from standard 90/80/70/60 scaleSubtract wrong answers from total questions to get correct answers, then divide by the total and multiply by 100. A standard US letter scale (90+ = A, 80+ = B, etc.) is applied to the percentage.
Examples
25 questions, 4 wrong
Correct = 21 → 21 ÷ 25 × 100 = 84% (B).
84% — B
40 questions, 2 wrong
Correct = 38 → 38 ÷ 40 × 100 = 95% (A).
95% — A
About
The EZ Grader is a fast grading aid for teachers, tutors, and parents. Enter the total number of questions and the number of wrong answers, and it instantly returns the percentage score and letter grade — no manual table lookup required. It is perfect for quickly marking quizzes, exams, and homework by hand, where an EZ grader chart is traditionally used. Because it accepts answers either way, it suits both scoring methods. The standard letter scale is applied automatically, so you can record grades immediately and move on to the next paper.
Frequently asked questions
Can I enter correct answers instead of wrong?
Yes — the tool accepts either. Pick the input that matches how you're scoring the paper.
How are letter grades assigned?
With the standard scale: A 90–100, B 80–89, C 70–79, D 60–69, F below 60.