Grade Calculator & Grading Chart for Teachers
A free easy grader and grading chart for teachers. Enter the total questions and the number wrong — the percentage, letter grade and a full grade table appear as you type. Works for any test length, from a 12-question quiz to a 100-question exam.
Calculate a Test Grade
Shareable result
Score: –
Passing Grade & Target Score
Passing thresholds, target grades, and what a few more correct answers would change. These follow the total above unless you change them.
How many can they miss and still pass?
What do they need for a specific grade?
What if they got a few more right?
How much does each mistake cost?
Grading Chart & Grade Table for Teachers
A printable grading scale chart and grade table — every score, percentage and letter grade for this test length.
This free grade chart works as a grading scale chart, grade table and teacher grading chart in one. Pick a test length below to see the grading chart percentages and the letter grade for every number correct — handy for a 10, 12, 15, 20, 25, 30, 50 or 100-question test.
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Enter a total number of questions to generate the table.
Class Average Calculator
Add each student's wrong answers. Nothing leaves your browser.
Press Enter in a row to add the next student.
| Student | Wrong | Correct | Percentage | Grade | Remove |
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No students yet. Add a student or send papers over from Quick grade.
Class summary
- Average
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- Pass rate
- –
- Highest
- –
- Lowest
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Grade distribution
Grading Scale Settings
Saved on this device and applied everywhere on the page.
What grade is a percentage?
Enter any percentage to see its letter grade on your current scale.
Grade scale
Edit any minimum percentage to switch to a custom scale.
Passing and rounding
Letter grades use the rounded percentage, so what you see is what gets graded.
Keyboard shortcuts
- Enter in an inputNext field · log paper · add student
- Copy resultCtrl + Shift + C
- Reset calculatorEsc
- Single / Quick mode1 / 2
- Toggle themeT
- Jump to wrong-answers input/
How Grades Are Calculated
How is the percentage worked out?
Percentage = correct answers ÷ total questions × 100. With 50 questions and 7 wrong, that's 43 ÷ 50 × 100 = 86%. If you set points per question, points earned and lost are shown too, but the percentage stays the same because every question is worth the same amount.
How much is each question worth?
Each question is worth 100 ÷ total questions percent. On a 50-question test every question is 2%, on a 20-question test it's 5%, and on a 35-question test it's about 2.86%. That is also exactly how much each wrong answer costs.
What letter grade is a 70%?
On the standard US scale, 70% is typically a C-. Some schools set the cutoff a little differently, so check the scale in Settings if your school uses its own grading policy.
What grade is 12 out of 15?
12 out of 15 is 80%, typically a B- on the standard scale. See every score for a 15-question test in the grading chart.
What is the grading scale for a 20-question test?
On a 20-question test, each question is worth 5%, so every wrong answer lowers the score by 5 percentage points. Use the 20 preset in the grading chart to see the full scale.
Can I grade with half points?
Yes — set points per question in the calculator and you can award or deduct half points on any item, similar to a physical grading chart. The percentage and letter grade update to match.
How does rounding affect the letter grade?
The letter grade is applied to the percentage after your rounding setting. With whole-number rounding, 89.5% becomes 90% and earns an A-; with exact rounding it stays 89.5% and earns a B+. Pick the rule that matches your grading policy in Settings.
Is student data stored anywhere?
No. Everything runs in your browser. Only your preferences (theme, grade scale, passing score, rounding, and recent question counts) are saved on this device. Student names and scores are never sent anywhere and are cleared when you close the tab.
What is the grading scale for a 12-question test?
On a 12-question test each question is worth about 8.33%, so every wrong answer lowers the score by roughly 8.33 percentage points. Enter 12 as the total (or use the presets) to see the full 12-question grading scale chart with the percentage and letter grade for every score.
What are the grading chart percentages?
The grading chart shows the percentage for every number correct: percentage = correct ÷ total × 100. Choose your test length to see all the grading chart percentages and the matching letter grades in one grade table.