Student calculator
Test Grade Calculator
Calculate a test grade from wrong answers, correct answers, or points earned. See the percentage, letter grade, and score breakdown instantly.
Use the calculator below, then print or save the result once you have the answer you need.
Enter your test score
How Test Grades Are Calculated
A test grade is usually calculated by dividing the score earned by the total possible score. If the test is based on questions, correct answers are divided by total questions.
Test grade = Score earned / Score possible x 100
Worked Examples
If you miss 5 questions on a 40-question test, you got 35 correct. That score is 35 / 40 x 100 = 87.5%.
If you earn 42 points out of 50, your test grade is 42 / 50 x 100 = 84%.
Frequently Asked Questions
Should I use questions mode or points mode?
Use questions mode when every question is worth the same amount. Use points mode when questions have different point values.
Can this calculator handle extra credit?
Yes. In points mode, enter points earned above the points possible if your teacher allows extra credit.
Is an 80% always a B?
This calculator uses a common scale, but your class syllabus may use different cutoffs.