Easy Grader
QuickGrade turns wrong answers into percentage scores in a single tap. It’s the fast, mobile-friendly grade calculator built for real classrooms — no plastic wheel, no signup, no clutter.
Grade Calculator
The teacher's grading wheel, reinvented for the web.
An Easy Grader is a grading tool teachers have used for decades to turn a stack of paper tests into percentage scores without doing the math by hand. The original was a sliding cardboard wheel — pick the number of questions on the outer ring, line it up with the number wrong on the inner ring, and read the percentage through a small window. QuickGrade is that same idea rebuilt for phones, tablets, and laptops. Type the total questions, count the wrong answers, and the percentage, letter grade, and full grading chart appear instantly.
It's used by elementary, middle school, and high school teachers, college professors, tutors, homeschool parents, and students of every age. Because the math runs in your browser, results are immediate and nothing you enter is uploaded or stored.
Faster than a wheel, cleaner than a spreadsheet.
Grading a class set of 30 papers with a plastic Easy Grader wheel takes real time — line up the numbers, squint through the window, copy the percentage, repeat. QuickGrade removes every step. Tap +1 Wrong as you spot each miss, or press the W key on a keyboard, and the score updates live. Turn on the quick chart to hand students the full percentage-to-letter-grade breakdown for that test length.
- Instant. No submit button — results update as you type.
- Accurate. Optional decimal precision for partial credit and tight rounding rules.
- Private. Runs entirely in your browser. Nothing is uploaded or saved.
- Free. No signup, no paywall, no ads inside the calculator.
- Portable. Works offline once the page loads and fits every screen size.
Three steps to a graded paper.
1. Enter total questions
Type how many questions were on the test, quiz, or assignment.
2. Enter number wrong
Count wrong answers as you grade — or tap +1 Wrong per miss. The score updates in real time.
3. Read the grade
See the percentage, letter grade, and printable chart. Move to the next paper.
Built for the way you actually grade.
Instant Results
Enter the total questions and number wrong — the percentage and letter grade appear immediately, no button press required.
Keyboard Shortcuts
Press W to add a wrong answer and R to reset. Grade a full stack of papers without ever touching your mouse.
Printable Grade Chart
Toggle the full percentage-to-letter-grade chart for any test length and print or save it as a reference sheet.
Mobile Friendly
Works on any phone, tablet, Chromebook, or laptop. Fast loading, no ads on the tools, no signup required.
For Every Grade Level
Used by elementary teachers, middle school and high school teachers, college professors, tutors, homeschool parents, and students.
Trusted Grade Formulas
The math follows standard grading practice used across US schools, colleges, and universities — no surprises when you compare with your gradebook.
Percentage · Letter Grade · GPA
Standard US grading scale with plus/minus letters and 4.0 GPA equivalents. See the full grading scale chart for school and country variations.
| Percentage | Letter | GPA |
|---|---|---|
| 97 – 100 | A+ | 4.0 |
| 93 – 96 | A | 4.0 |
| 90 – 92 | A− | 3.7 |
| 87 – 89 | B+ | 3.3 |
| 83 – 86 | B | 3.0 |
| 80 – 82 | B− | 2.7 |
| 77 – 79 | C+ | 2.3 |
| 73 – 76 | C | 2.0 |
| 70 – 72 | C− | 1.7 |
| 67 – 69 | D+ | 1.3 |
| 63 – 66 | D | 1.0 |
| 60 – 62 | D− | 0.7 |
| Below 60 | F | 0.0 |
Frequently asked questions
What is an Easy Grader?
An Easy Grader (sometimes called an EZ Grader or Quick Grader) is a tool teachers use to instantly convert the number of wrong answers on a test or quiz into a percentage score and letter grade. QuickGrade is a free online version — no plastic wheel, no signup, and it works on any device.
Is this grade calculator really free?
Yes. Every calculator on QuickGrade — the Easy Grader, weighted grade calculator, GPA calculator, final grade calculator, and letter grade calculator — is completely free with no signup, no paywall, and no hidden charges.
Does the grade calculator work on mobile?
Yes. QuickGrade is fully responsive and loads quickly on phones, tablets, Chromebooks, and laptops. Teachers commonly use it during class on a phone or tablet while grading paper assignments.
What grading scale does QuickGrade use?
QuickGrade reports a raw percentage score alongside a letter grade based on the standard US 10-point scale: A 90–100, B 80–89, C 70–79, D 60–69, F below 60. See the full grading scale chart for plus/minus and 7-point variations.
Can students use QuickGrade too?
Absolutely. Students at every level — from elementary school to college and university — use QuickGrade to check test scores, calculate weighted grades, work out what they need on a final exam, and track their GPA.
How is the percentage score calculated?
The formula is simple: (number of correct answers ÷ total questions) × 100. Enter the total questions and the number wrong, and QuickGrade computes the percentage instantly, with optional decimal precision.
Can the Easy Grader handle partial credit?
Yes. If a student misses half a point on a question, enter 0.5 in the wrong-answers box. The calculator accepts decimal values, so partial credit for short-answer or essay items works the same as whole misses.
Does QuickGrade store or share my data?
No. Every calculation runs in your browser. Nothing you type is uploaded, saved to a server, or shared with any third party. You can even use the Easy Grader offline once the page has loaded.
How do I grade a test with extra credit questions?
Set the total questions to the base number the test is scored out of, then subtract each extra-credit point from the wrong-answer count. For example, on a 20-question test with two extra-credit questions correct, enter 20 as the total and use −2 as an adjustment to wrong answers.
What's the difference between the Easy Grader and the Grade Calculator?
The Easy Grader on this home page grades a single assignment by counting wrong answers. The Grade Calculator hub combines weighted categories, final-exam targets, GPA, and letter-grade conversion for a whole course. Use whichever matches the question you're trying to answer.
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Weighted Grade Calculator
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GPA Calculator
Convert letter grades and credits into a 4.0 GPA.
Final Grade Calculator
Find the score you need on the final exam.
Letter Grade Calculator
Convert any percentage into a letter grade.
Grading Scale Chart
Full percentage, letter, and GPA reference chart.
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