Free Quick Grade Calculator — Instant Test Score & Letter Grade
Free · No Sign-up · Instant Results
Quick Grade Calculator
QuickGrade is a free online EZ Grader and Easy Grader for teachers and students.
Instantly calculate test, quiz, and exam scores using total questions and wrong answers..
Quick Grade Calculator
Student 1
Total Questions
Wrong Answers
10/10 = 100.00% (A+)
How to Use
How to Use the Quick Grade Calculator
Our Quick Grade Calculator is the fastest way to find out your test or quiz score. It uses a simple formula — total correct answers divided by total questions — to give you an accurate percentage and letter grade instantly. No manual math required.
1
Enter Total Questions
Type the total number of questions on the test or quiz into the "Total Questions" field. For example: 20, 25, 50, or 100.
2
Enter Wrong Answers
Type the number of questions answered incorrectly. You can also use the +1 Wrong and -1 Wrong buttons to adjust the count quickly.
3
See Your Grade Instantly
Your score appears immediately — showing correct answers, total, percentage, and letter grade (A+, A, B, C, D, or F). Enable "Show Decimals" for a more precise result.
4
Grade Multiple Students
Click "Add Student" to grade a whole class at once. Each student gets their own score card. Click Share to copy any result to your clipboard.
About This Tool
What Is a Quick Grade Calculator?
A Quick Grade Calculator is a free online tool that converts the number of wrong answers into a percentage score and letter grade. It is also known as an EZ Grader or Easy Grader — originally a paper sliding scale used by teachers to grade tests without doing math by hand.
Our digital version replaces the old paper grader completely. It works for any test size — from a 5-question quiz to a 100-question final exam — and calculates your score in under one second.
"The Quick Grade Calculator is used by thousands of teachers to grade tests instantly and by students to check their scores before results are officially announced."
The Grade Calculation Formula
The formula used is simple and standard across all schools:
The calculator uses the formula: Score % = (Total Questions − Wrong Answers) ÷ Total Questions × 100. Enter total questions and wrong answers — your percentage and letter grade appear instantly.
Yes — completely free. No sign-up, no account, no subscription. Use it as many times as you want on any device.
Yes. Click the "Add Student" button to add more student score cards. Each student gets their own result with accuracy rate, mistake rate, pass/fail status, and improvement tip. You can share or copy each result individually.
80% is a B grade in the standard US grading scale. The scale is: A+ (100%), A (90–99%), B (80–89%), C (70–79%), D (60–69%), F (below 60%). Our calculator uses this standard scale automatically.
An EZ Grader (also called Easy Grader) was originally a paper sliding scale used by teachers to look up test scores without calculating percentages by hand. Our Quick Grade Calculator is the modern digital version — it is faster, more accurate, and works for any number of questions.
It depends on the total number of questions and your school's passing percentage. For a 20-question test with a 60% passing mark, you can get up to 8 wrong and still pass. For 70% passing, you can only get 6 wrong. Use our calculator to find your exact limit.
Yes — the calculator is fully responsive and works perfectly on smartphones, tablets, and desktops. No app needed. The +1 Wrong and -1 Wrong buttons are especially useful on mobile for quick adjustments.
