Divide the points you earned by the points the exam is worth and multiply by 100. Scoring 45 out of 50 gives 45 ÷ 50 × 100 = 90%, which is an A on the common US 10-point scale (A 90+, B 80+, C 70+, D 60+, F below 60).
Teachers marking a stack of papers and students checking a returned test both need the same conversion: raw points into a percentage. Enter the exam total and either the points earned or the points taken off, and the calculator shows the percentage, the letter grade on the 10-point scale, the points earned and lost, and how many points your pass mark requires. A slider sets the pass mark from 30% to 100%, and a chart places the score on the A to F bands. The letter grade follows the plain 90/80/70/60 cut-offs; schools that use plus and minus grades, a 7-point scale or a curve will grade the same percentage differently, so check your syllabus before reading the letter as final.
Pick Points I earned if you have your raw score, or Points I lost if you counted wrong answers or marks taken off.
Type the maximum points available on the paper, such as 50 or 120.
Fill in the earned or lost points; decimals work for half-mark questions.
Move the slider to your course's pass percentage to see whether the score clears it and how many points that takes.
Result Exam score: 90%
Letter grade (10-point scale): A
Points earned: 45
Points lost: 5
Against your pass mark: Pass
Points needed to pass: 30
Five points dropped on a 50-point quiz is exactly 90%, the bottom edge of an A on the 10-point scale.
Result Exam score: 82.5%
Letter grade (10-point scale): B
Points earned: 33
Points lost: 7
Against your pass mark: Pass
Points needed to pass: 28
33 correct out of 40 gives 82.5%, a B, and clears a 70% pass mark that needs 28 correct answers.
Result Exam score: 55%
Letter grade (10-point scale): F
Points earned: 66
Points lost: 54
Against your pass mark: Below pass mark
Points needed to pass: 78
66 points is 55%, short of the 78 points a 65% pass mark asks for on a 120-point paper.
Score % = E ÷ T × 100, where E = T − L when points lost are entered
ETLPThe percentage is shown to one decimal place and the letter is read from that shown value, so 89.96% displays as 90% and grades as an A. Letters follow the 10-point scale used by many US schools: 90 and above is A, 80 to 89.9 is B, 70 to 79.9 is C, 60 to 69.9 is D, and anything lower is F. Points needed to pass are rounded up to a whole point, because a fractional point short of the line is still short.
Subtract the points lost from the total to get the points earned, then divide by the total. On a 40-question test with 7 wrong, 33 ÷ 40 × 100 = 82.5%.
On the 10-point scale, 76% falls in the 70 to 79.9 band, so it is a C. A school with plus and minus grades would usually call it a C.
Multiply 120 by 0.65 to get 78 points. If the product has a fraction, round up, since 77.5 points would still sit below a 65% line.
Yes. Points earned, points lost and the exam total all accept decimals, so a score of 42.5 out of 50 returns 85%, a B.
Grade cut-offs are set locally. Some districts use a 7-point scale where an A starts at 93%, others add plus and minus grades, and some instructors curve. The percentage is the same everywhere; only the letter mapping changes.
Enter the base total as the exam total and include bonus points in what you earned only if they keep you at or below the total. The calculator caps earned points at the total, so a score above 100% needs to be worked out by hand.
Using this tool in an assignment, article or report? Copy a citation, or a link for your website.
Tools Directory Editorial Team. (2026, October 10). Exam Score Calculator. Tools Directory. Retrieved October 25, 2026, from https://tools.milunir.com/education/test-scores-and-admissions/exam-score-calculator/
Tools Directory Editorial Team. “Exam Score Calculator.” Tools Directory, 10 Oct. 2026, https://tools.milunir.com/education/test-scores-and-admissions/exam-score-calculator/. Accessed 25 Oct. 2026.
Tools Directory Editorial Team. “Exam Score Calculator.” Tools Directory. Last modified October 10, 2026. Accessed October 25, 2026. https://tools.milunir.com/education/test-scores-and-admissions/exam-score-calculator/.
<a href="https://tools.milunir.com/education/test-scores-and-admissions/exam-score-calculator/">Exam Score Calculator – Tools Directory</a>