EZ Grader
A teacher's grading scale: enter how many questions are on the test and instantly see the percentage (and letter grade) for every number wrong — plus a quick wrong-answers lookup.
How to Use
- Type the <strong>number of questions</strong> on the test. The full grading scale appears instantly — one cell per number wrong, with its percentage and letter grade.
- Type a number into <strong>wrong</strong> (or click any cell) for a quick lookup — the big result shows that score's percentage and letter.
- Pick how to <strong>round</strong> the percentages (whole number, half, or one decimal) to match how you grade.
- Cells are colour-coded by letter grade (A green → F red) so you can scan the scale at a glance.
How grading works
About the EZ Grader
Whether you are at a desk or on your phone, the EZ Grader makes grading, GPA and study planning easy — and it is completely free. A teacher's grading scale: enter how many questions are on the test and instantly see the percentage (and letter grade) for every number wrong — plus a quick wrong-answers lookup.
How it works
Type your numbers into the boxes. The answer shows up right away — you do not have to press a button. If you change a number, the answer changes too. So you can try different numbers and watch what happens, or check an answer you worked out yourself. Just make sure each box has the right kind of number in it.
Want the deeper story? The Knowledge Base explains the ideas behind the tools in more detail.
Frequently Asked Questions
How does it calculate the grade?
Percentage = (questions correct ÷ total questions) × 100, where correct = total − wrong. With 25 questions, 3 wrong is 22/25 = 88%. The tool builds the whole chart from 0 wrong (100%) down to all wrong (0%) so you can grade a stack of papers by glancing at the “number wrong”.
What letter grade does each percentage get?
It uses the common scale: 90–100 = A, 80–89 = B, 70–79 = C, 60–69 = D, below 60 = F (with +/− bands near the edges). Letter cut-offs vary by school, so treat the letters as a guide and use the percentage as the source of truth.
Can I round the scores?
Yes — choose whole numbers, halves, or one decimal place. Whole-number rounding matches most paper grading; one decimal is handy for spreadsheets and close cut-offs.
How is this different from the Test Score Calculator?
The <a href="https://utilitiesbunker.com/tools/test-calculator">Test Score Calculator</a> grades one result (correct out of total). The EZ Grader builds the <em>entire</em> scale at once — every possible number wrong and its grade — which is what you want when marking a whole class against the same test.
How do I use the EZ Grader?
Just type your numbers. The answer shows up right away — there is no button to press. Change anything and it updates by itself.
Is it free? Does it work without internet?
Yes to both. It is free with no sign-up, and once the page has loaded it keeps working even with no internet.
Where does my data go?
Nowhere — every calculation runs on your own device. Nothing you enter is uploaded, logged, or stored.
Common Use Cases
Teachers grading papers
Mark a stack fast — just count wrong answers and read the percentage.
Quizzes & exit tickets
Instant scale for any short quiz length.
Students checking work
See what each number wrong does to your score.
Tutors & homeschool
A printable-style grading chart for any test size.
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