Handy for practice tests, entrance exams and classroom quizzes alike. The same maths also works for weighted tests - just include the bonus and the calculator will fold it in. Pair it with the High School GPA Converter when you want the percentage translated back to a 4.0 GPA point.
Calculator
Formula used
Percentage = (correct + extra) ÷ possible × 100
How to use the Test Score Percentage Calculator
- Enter the number of correct answers and the total questions.
- Add bonus credit if the test allows it.
- Optionally set a target percentage to see what is needed.
- Read the percentage, letter grade and 4.0 GPA point.
About this tool
The Test Score Percentage Calculator is built for speed and accuracy: every calculation runs in your browser, so your data never leaves your device and the result updates as you type. It works equally well on a phone, a tablet or a desktop, and it is free to use as many times as you like.
Common use cases
- Reading a graded test result.
- Estimating a practice-test score before the official grade arrives.
- Comparing scores across tests of different lengths.
- Calculating extra credit impact.
Tips for the best result
- Use the latest figures you have - even a small change in rate or term can shift the outcome by hundreds.
- For annual figures, divide by 12 to get a monthly number you can compare with the result.
- Bookmark this page and revisit the calculation as the inputs change.
Frequently asked questions
Are grading scales the same everywhere?
No. Many schools use a 90/80/70/60 cut for A/B/C/D; this tool uses the more granular + and − scale, which is the common US standard.
What if my score is over 100%?
That happens with extra credit. The percentage stays above 100% and the letter grade follows the same scale, so an A+ is still an A.
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