Quick Grade Calculator for Teachers
Marking a pile of tests by hand takes an evening most teachers don't have to spare. QuickGradeCalc turns the number of questions and the number a student missed into a percentage and a letter grade right away, with no arithmetic on your part.
It's made for classroom teachers, tutors, substitutes, and homeschool parents. Some people call this kind of tool an EZ grader or a teacher grader, and it works the same way. If you already have a percentage and just need the letter, try the percentage to letter grade calculator.
Grade a stack of tests in seconds. Set the question count once, then tap +1 wrong — or press W — for each miss.
Keyboard: W +1 wrong · E undo · R reset
10 / 10 correct
100%
A
The grading formula
Grade % = (Points Earned ÷ Total Points) × 100Example: 18 correct out of 20 questions = (18 ÷ 20) × 100 = 90%, an A on the default scale.
Why Teachers Use It
- Fast: one tap per wrong answer, and the grade updates instantly.
- Your scale: set your own cutoffs for A, B, C, and D.
- Printable: a quick chart of every possible score for your desk.
- Works anywhere: phone, tablet, or computer, right in the browser.
- Free: no account, no download, no sign-up.
How to Use This Calculator
Here's the quick routine for working through a pile of papers:
- Enter the number of questions on the test.
- Tap +1 wrong (or press W) for each incorrect answer, or type the number wrong.
- Read the result: the percentage and letter grade update instantly.
- Reset for the next student with Reset — next test (or press R).
Tapped too many times? Press E to undo. The Grade scale button shows the scale in use, Show decimals displays decimal percentages, and the quick chart lists every possible score and can be printed.
Grade Scale
The calculator opens with this familiar breakdown, which you can adjust:
- A: 90-100%
- B: 80-89%
- C: 70-79%
- D: 60-69%
- F: Below 60%
Every school sets its own boundaries, so adjust the cutoffs below the calculator until they match your own policy. If your gradebook uses pluses and minuses, see the US grading scale.
While you work through a stack of papers, a printed copy of the quick chart saves you from glancing back at the screen. The full grade percentage chart covers percentages from 0 to 100.
Examples
Short quiz
Eight out of ten works out to 80 percent, which lands on a B with the default cutoffs.
Worksheet
A 50-point worksheet scored 45 points comes to 90%, an A.
Unit test
Picture a 30-item test where a student misses three items; that leaves 27 right answers. Enter 30 questions and tap +1 wrong three times to get 90%.
Course grade
Say quizzes are 20% of the grade and scored 92%, homework is 30% and scored 85%, and the final is 50% and scored 88%. The weighted result is 0.2 × 92 + 0.3 × 85 + 0.5 × 88 = 87.9%, a B on the default scale. Weighted categories get a full walkthrough in the grade calculator guide.
Where It Helps
- Quizzes and tests: set the question count once and reuse it for every paper.
- Stacks of papers: reset between students without retyping anything.
- Quick lookups: keep the printed quick chart beside you for common scores.
- Covering a class: open the page, enter the question count, and start grading; nothing to install or log into.
- High school and college: for GPA conversion, read the grade calculator guide.
More Ways to Grade
Percentage to Letter Grade Calculator
Type in a percentage between 0 and 100 to find its letter grade, and browse the full scale with GPA points beside each letter.
Open Calculator →Grade Calculator Guide
Step-by-step help for turning raw points into a percentage, a letter, or an overall course grade, with examples you can follow.
Open Guide →Frequently Asked Questions
How do I grade a test quickly?
Enter the number of questions, then tap +1 wrong (or press W) for each miss. The percentage and letter grade update as you go.
How is a test percentage calculated?
Work out how many answers were right (the total minus the wrong ones), turn that into a fraction of the whole test, then convert the fraction to a percentage. For 16 right out of 18, that comes to about 89%.
What letter does a given percentage earn?
Compare it to your scale. Under the default settings, a score of 90 or more is an A, anything from 80 up to 90 is a B, 70 up to 80 is a C, and 60 up to 70 is a D. You can change any cutoff in the calculator.
Can I change the grade scale?
Yes. Edit the minimum percentage for A, B, C, and D under the calculator, or reset to the default 90 / 80 / 70 / 60.
How do I calculate a weighted grade?
Say a category counts for 30 percent of the course and the student averaged 85 in it: that category adds 0.30 x 85 to the total. Repeat that for each category, then total the results. See our full grade calculator guide.
Can I print the results?
Yes. Press Print on the quick chart for a page that pairs each possible score with its letter, ready to keep beside you.
Is QuickGradeCalc free?
Yes, it costs nothing. You open the page and start grading, with no sign-up and no app to install.
Grading shouldn't take over your evening. Tell QuickGradeCalc how many questions there were and how many were missed, and it shows the percentage and letter almost immediately. Bookmark it for whenever the next set of papers comes in.