Free Teacher Tool

Free Grade Calculator & EZ Grader

Enter total questions and wrong answers — get the percentage and letter grade instantly. Full grading chart, 3 scales, final exam calculator. No sign-up, no ads.

100% FreeHow it works
Grade Calculator
Free Tool
Grading Scale

A ≥ 90 · B ≥ 80 · C ≥ 70 · D ≥ 60

Decimals
Rounding
17 out of 20 correct
85%
B
Quick gradingKeys: W +1 · H +½ · Backspace −1 · R next paper
Most wrong answers for each grade
  • A ≤ 2
  • B ≤ 4
  • C ≤ 6
  • D ≤ 8

How to use it

How to Calculate Grades in 4 Steps

From paper to percentage in under 5 seconds.

  1. 1

    Enter total questions

    Type the total number of questions on your test, quiz, or assignment.

    2 seconds

  2. 2

    Enter wrong answers

    Type how many questions the student got wrong, or switch to points mode and enter the points earned.

    2 seconds

  3. 3

    See the grade instantly

    Get the percentage score and letter grade immediately. The full grading scale table updates automatically.

    Instant

  4. 4

    Print the grade chart

    Print the complete grading scale for your test — every possible score from 0 to the total, with percentage and letter grade.

    5 seconds

What you get

Everything You Need to Grade Quickly

  • Instant Results

    Enter total questions and wrong answers — get percentage and letter grade in real time. No clicking needed.

  • Full Grade Chart

    See the complete grading scale for your test — every possible score from 0 wrong to all wrong, with percentage and letter grade.

  • Custom Grading Scales

    Choose Standard 10-point (A-F), Plus/Minus (A+ through F) or 7-point, or build your own scale with the lowest percentage for each letter. Your custom scale is saved in this browser.

  • EZ Grader Mode

    Classic EZ Grader functionality — enter total questions and instantly see what score each number of wrong answers gives.

  • 'What Do I Need?' Calculator

    Students can calculate what score they need on the final exam to reach their target grade. Enter current grade, final weight, and goal.

  • Print-Ready

    Print the full grading chart for any test length. Keep a grading scale at your desk for fast, accurate grading.

  • Mobile-Friendly

    Grade on your phone while walking around the classroom. Fully responsive design works on any screen size.

  • Private & Secure

    All calculations happen in your browser. Nothing you enter is sent to a server; your settings stay on this device.

What Is a Grade Calculator?

A grade calculator (also called an EZ Grader or easy grader) is a tool that converts the number of correct answers on a test into a percentage score and letter grade. Teachers use grade calculators to quickly score papers without doing mental math for every student.

This free online grade calculator replaces the classic plastic EZ Grader sliding scale. Enter the total number of questions and the number of wrong answers, and instantly see the percentage, letter grade, and a complete grading chart for every possible score on your test.

Whether you need a test grade calculator for a 20-question quiz or a 100-question final exam, this tool handles it instantly. It supports Standard 10-point, Plus/Minus, 7-point and custom grading scales, scores by questions or by points, generates a printable grade chart, and includes a weighted-category calculator and a "what score do I need on the final?" calculator for students.

How Teachers Use Grade Calculators

The most common workflow: print the full grading chart for your test length and keep it at your desk. As you grade each paper, count the wrong answers and look up the score on the chart. It is quicker than working out each percentage in your head and avoids arithmetic slips.

Want to skip manual grading entirely? Our AI Quiz Maker generates quizzes that are automatically graded when students take them online. Pair it with our AI Rubric Generator for a complete assessment toolkit.

Grade Calculator — Frequently Asked Questions

Common questions about this free grading tool

Enter the total number of questions on your test and the number of wrong answers. The calculator instantly shows the percentage score (correct/total × 100) and the corresponding letter grade based on your selected grading scale.

Standard 10-point (A = 90-100, B = 80-89, C = 70-79, D = 60-69, F = below 60), Plus/Minus (A+ = 97-100, A = 93-96, A- = 90-92, etc.), 7-point (A = 93-100, B = 85-92, C = 77-84, D = 70-76, F = below 70), and a custom scale where you set the lowest percentage for each letter.

Yes! This is a free digital version of the classic EZ Grader (Easy Grader) sliding scale tool. It does the same thing — enter total questions and see every possible grade — but online and free.

Yes. Click the Print Grade Chart button to open your browser's print dialog with a clean, print-optimized grading scale for your specific test.

Yes. The calculator is fully responsive and works on phones, tablets, and desktop browsers.

It's a tool for students to calculate the minimum score needed on a final exam to achieve a target grade. Enter your current grade percentage, the weight of the final exam, and your target grade — and it tells you exactly what you need.

Nothing you enter is sent to a server. Your settings, custom scale and list of graded papers are saved only in this browser (local storage) so they are still there next time; clear them with the Clear list button or your browser settings.

Still have questions?

Our team is here to help. Email us at support@aiquizmaker.co

Ready to Stop Grading by Hand?

Our AI Quiz Maker generates professional quizzes from any content — and auto-grades them. Pair with this free grade calculator for the ultimate grading toolkit.

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