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Quiz Grade Calculator
Grade a quiz in seconds from questions correct, wrong answers or points.
Teachers & Students3.0 grade points on the US Standard (90/80/70/60) scale
Quizzes are short, frequent and marked in batches, so the grading tool for them should be the fastest one on the page. Enter the number of questions and how many were missed, or the points earned out of the points possible, and this calculator gives the percentage and letter grade on the spot. It is the tool to keep open while a stack of exit tickets or a quick online quiz export sits beside you.
How to use the Quiz Grade Calculator
- Choose questions mode or points mode.
- Enter the total and the wrong answers, or the points earned and possible.
- Pick the grading scale if your school differs from the US standard.
- Read the quiz percentage and letter grade.
Formula
Both forms are the same ratio. The questions form suits paper quizzes; the points form suits quizzes with weighted questions or partial credit.
Worked example
An 8-question exit ticket with 2 wrong gives 6/8 = 75%, a C. Notice how sharp short quizzes are: 1 wrong is 87.5% (B+), 2 wrong is 75% (C), 3 wrong is 62.5% (D-). That steepness is why many teachers grade quizzes for completion or drop the lowest one, and why the curve calculator exists when a quiz proves too hard.
Good to know
Frequent low-stakes quizzes are among the best-evidenced study techniques, because retrieval practice strengthens memory. Their grades, though, are noisy measurements: a handful of questions cannot sample a topic the way a test can. Treat quiz percentages as signals rather than verdicts, look at which questions the class missed as a group, and let tests carry the heavy weighting in the term grade.
US grading scale reference
The table below is the US plus/minus scale used across this site. Where this tool offers other scales, the Canadian scale sets an A from 85% with a pass at 50%, and the Australian scale uses the bands HD (85%+), D (75-84%), C (65-74%), P (50-64%) and F (below 50%) on a 7.0 GPA.
| Letter grade | Percentage | GPA points |
|---|---|---|
| A+ | 97–100% | 4.0 |
| A | 93–96% | 4.0 |
| A- | 90–92% | 3.7 |
| B+ | 87–89% | 3.3 |
| B | 83–86% | 3.0 |
| B- | 80–82% | 2.7 |
| C+ | 77–79% | 2.3 |
| C | 73–76% | 2.0 |
| C- | 70–72% | 1.7 |
| D+ | 67–69% | 1.3 |
| D | 63–66% | 1.0 |
| D- | 60–62% | 0.7 |
| F | 0–59% | 0.0 |
Frequently asked questions
What is 7 out of 8 on a quiz?
87.5%, which is a B+ on the US plus/minus scale and a B on the standard scale. Enter any total and wrong count to see the equivalent for your quiz size.
Why does one wrong answer hurt so much on a quiz?
Each question on an 8-question quiz is worth 12.5%. Short assessments have coarse steps; the grading chart page shows the step size for every test length.
Should quizzes count toward the final grade?
Most teachers weight them lightly, commonly 10-20% of the course grade in total, or drop the lowest score, because individual quizzes are noisy measures. Your syllabus states the policy for your class.
Can I grade a true/false quiz with partial credit?
Switch to points mode and enter the points after partial credit is applied; the percentage follows from points earned over points possible.
How do I grade an online quiz export?
Most platforms export a percentage already. To turn it into a letter, run it through the Percentage to Letter Grade converter with your school scale.
Go deeper
Prefer the full walkthrough? Read our guide: What Do Letter Grades Mean? — it explains the method step by step with more worked examples.
Sources & further reading
- Education Week — grading and assessment coverage — Reporting and research on classroom grading practice for K-12 educators.
- ASCD — resources on fair and accurate grading — Professional guidance for educators on assessment and reporting.
Related tools
Last reviewed: November 2026. Results from this calculator are estimates based on the published scales above; your school's recorded grade is the official one.