The quick grader that grades
a stack of papers in seconds.
Type in the total questions and wrong answers, this easy grader calculator instantly shows the percentage, letter grade, and a full EZ Grader-style chart for the whole class.
85%
17 out of 20 correct
| Correct | Wrong | Percentage | Grade |
|---|
A quick grader takes the manual work out of scoring tests by hand. Instead of working out percentages on a calculator or counting down a paper EZ Grader slide chart, type in how many questions were on the test and how many a student got wrong.
This teacher grading calculator divides correct answers by the total, converts the result to a percentage, and matches it to the standard US letter grade scale (90%+ is an A, 80–89% a B, and so on down to F).
The grading chart below the tool is what makes this an easy grader for a full classroom set, not just a one-off calculation. It lists every possible score for the test size you entered, correct answers, wrong answers, percentage, and letter grade, so you can run down a stack of papers without recalculating each one individually.
It works the same way for a 5-question pop quiz or a 100-question final.
A quick grader is an online tool that converts a raw test score, like 17 correct out of 20, into a percentage and letter grade automatically. It replaces manual division and lookup charts with instant, on-screen results.
Yes. An EZ Grader is the classic plastic slide-chart teachers have used for decades to look up percentages by hand. This tool does the same job digitally, calculating the same correct-to-percentage conversion instantly for any number of questions.
The calculator uses the exact formula teachers and schools use: correct answers divided by total questions, multiplied by 100, rounded to one decimal place. Results match what you'd get working it out by hand or with a physical EZ Grader.
Yes. Enter any total question count, from a short 5-question quiz to a 200-question standardized test, and the grading chart updates to show every possible score for that exact test size.
By default, scores map to the common US scale: 90%+ is an A, 80–89% a B, 70–79% a C, 60–69% a D, and below 60% an F. This matches what most US schools use for everyday grading.
No account or sign-up is required. All calculations run instantly in your browser, and no student data is stored or sent anywhere.
Whether you call it a quick grader, an easy grader, or an EZ Grader, the goal is the same: turn raw scores into percentages and letter grades without manual math. This free quick grade calculator handles single scores and full-class grading charts alike, making it a practical teacher grading calculator for quizzes, midterms, and final exams of any size.