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Test Grade Calculator

Find your test or quiz percentage from total questions and wrong answers. Switch to points for partial credit or questions worth different marks.

Calculate your test percentage

Choose questions or points to match how your test is marked.

How to use the test grade calculator

Choose a method. Use Questions & wrong answers for equally weighted questions, or Points earned for tests marked with points.
Enter both numbers. In questions mode, enter the total questions and wrong answers. In points mode, enter possible points and points earned.
Calculate your test grade. View the percentage and score breakdown. Load an example to try sample numbers, or select Reset to clear both methods.

Questions mode uses whole numbers. Points mode accepts decimals, such as 42.5 out of 50. A blank field is not treated as zero: enter 0 explicitly when that is your score or wrong-answer count.

Test grade formulas

From questions and wrong answers

Correct answers = Total questions − Wrong answers

Test percentage = Correct answers ÷ Total questions × 100

Example: 20 questions with 3 wrong gives 17 correct answers. Your score is 17 ÷ 20 × 100 = 85%.

From points earned

Test percentage = Points earned ÷ Points possible × 100

Example: a test with 50 possible points and 42.5 earned points gives 42.5 ÷ 50 × 100 = 85%. This method includes partial credit without needing to count right and wrong answers.

Quick grading example: a 20-question test

When each question is worth the same amount, every correct answer on a 20-question test is worth five percentage points.

Wrong	Correct	Percentage
0	20	100%
1	19	95%
2	18	90%
3	17	85%
4	16	80%
5	15	75%
10	10	50%
20	0	0%

When to use points instead of question counts

Use points whenever questions have unequal mark values. If a 1-point question and a 9-point question make up a test, getting only the 9-point question right earns 90%, even though only one of two answers is correct. Question counting would incorrectly give 50% for that marking scheme.

The calculator displays up to two decimal places. For example, 2 correct out of 3 displays 66.67%. Your institution may use different rounding rules, letter-grade boundaries or adjustments.

Test Grade Calculator FAQs

How do I calculate my test grade from wrong answers?

Subtract wrong answers from the total number of questions, divide the correct answers by the total and multiply by 100. For 20 questions with 3 wrong, the result is 17 ÷ 20 × 100 = 85%. This method assumes equally weighted questions.

Can teachers use this as an easy grader?

Yes. For a test with equally weighted questions, enter the total and change the wrong-answer count for each paper. For tests with different mark values or partial credit, use Points earned mode instead.

What if some answers receive partial credit?

Use Points earned mode. Add all marks awarded, including partial marks, and enter that total with the maximum possible points. A score of 42.5 out of 50 gives 85%. Counting an answer only as right or wrong would lose that detail.

How should I count unanswered questions?

In questions mode, include an unanswered question in the wrong-answer count if it earns zero marks. If your test has negative marking, deductions or special rules, first work out the official net points. Points mode accepts non-negative totals only; it does not apply penalties automatically.

Need your overall class grade?

Combine your tests, homework and other assignments using the grading method from your syllabus.