Test Grade Calculator
Grade a stack of tests fast. Enter how many questions or points the test has, then look up any score by the number wrong or right, or print the full grading chart. Choose whole or half points, how to round, and the letter scale your school uses, or show percentages only.
Score = (total − missed) ÷ total × 100. On a 25-question test, 3 wrong is 22 ÷ 25 = 88%. The chart lists every possible score at once, so you can keep it beside the pile while grading, and the letters follow the scale you choose.
Up to 400. Use points if questions are worth different amounts.
Letters follow the rounded percentage.
Scoring
A 90+, B 80+, C 70+, D 60+, F below 60. Schools set their own cutoffs, so match your syllabus.
Look up one test by
88%
B
22 of 25 questions right
Grading chart: 25 questions
Letter grades: A 90+, B 80+, C 70+, D 60+, F below 60
| Wrong | Right | Score | Grade |
|---|---|---|---|
| 0 | 25 | 100% | A |
| 1 | 24 | 96% | A |
| 2 | 23 | 92% | A |
| 3 | 22 | 88% | B |
| 4 | 21 | 84% | B |
| 5 | 20 | 80% | B |
| 6 | 19 | 76% | C |
| 7 | 18 | 72% | C |
| 8 | 17 | 68% | D |
| 9 | 16 | 64% | D |
| 10 | 15 | 60% | D |
| 11 | 14 | 56% | F |
| 12 | 13 | 52% | F |
| Wrong | Right | Score | Grade |
|---|---|---|---|
| 13 | 12 | 48% | F |
| 14 | 11 | 44% | F |
| 15 | 10 | 40% | F |
| 16 | 9 | 36% | F |
| 17 | 8 | 32% | F |
| 18 | 7 | 28% | F |
| 19 | 6 | 24% | F |
| 20 | 5 | 20% | F |
| 21 | 4 | 16% | F |
| 22 | 3 | 12% | F |
| 23 | 2 | 8% | F |
| 24 | 1 | 4% | F |
| 25 | 0 | 0% | F |
How to use the test grade calculator
- 1Enter how many questions or points are on the test.
- 2Pick whole or half points, how to round, and a letter scale, or percent only.
- 3Type how many a student got wrong, or right, to see the percentage and letter.
- 4Use the full chart for the rest of the class; the current score is highlighted.
- 5Print the chart to keep next to the stack of tests.
When this is useful
Grading a stack of tests
Count the misses on each paper and read the score straight off the chart.
Quizzes with partial credit
Switch to half points so a 9.5 out of 10 has its own row.
Tests worth different points
Enter the test's total points and the points missed instead of question counts.
Helpers and substitutes
Print a chart so an aide or substitute can grade with the same numbers.
Students checking a score
Students can confirm their own percentage from the number they got right.
Examples to try
A 25-question test
3 wrong is 88%, a B on the 90/80/70/60 scale.
A 40-point test with half points
A chart in 0.5-point steps from 40 down to 0.
Percent only
Hide letters entirely when your school reports percentages.
Your school's own cutoffs
Set A from 94, B from 86, and so on, and the chart follows them.
A 100-point exam
A four-column chart that fits on a printed page.
Tips for better results
Match the rounding to your gradebook
If your gradebook rounds 89.5 up to 90, choose whole numbers so the letters agree.
Use points for uneven questions
When questions are worth different amounts, grade by points missed rather than questions wrong.
Pick the scale before printing
The letters on the printed chart follow the scale selected on screen.
Print one chart per test length
Keep charts for the test sizes you give most often, such as 10, 20, and 25 questions.
How the test grade calculator works
Each score is (total − missed) ÷ total × 100, rounded half up to the number of decimal places you choose. The chart repeats that for every possible number missed, from none to all, in whole or half steps.
Letters are assigned from the rounded percentage, so a row never shows a percentage and a letter that disagree. Choose A–F with plus and minus, a 90/80/70/60 scale, your own cutoffs, or percent only; schools set their own scales, so none is presented as the standard.
Private by design
- No account and no sign-up. Just open it and start.
- Everything runs on your device, so the test sizes and scores you enter stays with you.
- Nothing you create is uploaded. No values, names, scores, or generated content are sent to our servers.
- We use Google Analytics only for basic, anonymous pageview counts. It never receives what you enter into the tool.
Frequently asked questions
How do I calculate a test grade?
Subtract the number wrong from the total, divide by the total, and multiply by 100. On a 20-question test with 3 wrong, that's 17 ÷ 20 × 100 = 85%.
What if questions are worth different points?
Enter the test's total points instead of the number of questions, and look up the points missed. Switch to half points if you give half credit.
How are the percentages rounded?
Half up, to whole numbers, one decimal, or two decimals, whichever you choose. The letter grade follows the rounded percentage shown.
Which grading scale does it use?
You choose. It opens on a 90/80/70/60 A–F scale, and you can switch to A–F with plus and minus, set your own cutoffs, or show percentages only. Schools set their own scales, so use the one in your syllabus.
Is this an EZ grader?
It does the same job as the classic EZ Grader slide chart and online grading charts: find the number wrong, read the score. It adds half points, rounding choices, and your own letter scale, and prints a chart for any test up to 400 questions or points (200 with half points).
How is this different from the Grade Calculator?
This page scores a single test. The Grade Calculator combines many assignments, with category weights, into a course grade, and the Final Grade Calculator works out what's needed on the final.
Is anything saved or sent?
No. The chart is built in your browser, and nothing you type is uploaded or stored.
More classroom tools
Grade Calculator
Enter scores to see a current grade as a percentage and a letter, with weighted categories or a simple average.
Final Grade Calculator
Find the score you need on the final exam for an A, B, or C, or see that it's already secured.
Always free · No account needed · Nothing you type leaves your device unless you choose to save it.