Enter the total number of questions and your number of wrong answers (or correct answers) to get your quiz score percentage and letter grade. The Quiz Score Calculator shows your fraction score, percentage, and grade instantly — great for teachers grading stacks of tests or students checking their results.
Percentage Score
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Fraction Score
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Correct Answers
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Letter Grade
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Divide the number of correct answers by the total number of questions, then multiply by 100. For example, if you got 17 out of 20 correct, your score is (17 / 20) × 100 = 85%. You can also subtract wrong answers from the total to find correct answers first.
On a standard grading scale, 85% is a B. On a plus/minus scale, it falls in the B range (typically 83–86%). Letter grade cutoffs can vary by school or instructor, but 85% is generally considered a solid B.
Yes, 27 out of 40 equals 67.5%, which is typically a passing grade (a D or D+ on most scales). Whether it counts as passing depends on your institution's minimum requirements — many require at least 60% to pass.
If you get 7 wrong out of 40 questions, you answered 33 correctly. That's (33 / 40) × 100 = 82.5%, which is a B on a standard grading scale.
Yes — 75 out of 80 equals 93.75%, which is an A on most grading scales. On a plus/minus scale, it would typically be an A or A−.
A simple scale uses five grades: A, B, C, D, and F, each covering a 10-percentage-point range. A plus/minus scale breaks each letter into three levels (e.g. A+, A, A−), giving more granular feedback on performance.
This calculator is designed for tests where each question is worth one point (all-or-nothing). For partial credit or weighted questions, you would need to enter the total points earned and total points possible directly.
On a standard scale, a score of 90% or higher earns an A. On a plus/minus scale, an A− starts at 90%, a plain A at 93%, and an A+ at 97% or higher (cutoffs may vary by institution).