This calculator requires the use of Javascript enabled and capable browsers. This script simply tells you the percentage and test grade earned on a test. Input the points possible and the points given. The grade percentage is calculated by dividing the earned points by the total points possible. The formula is: Points earned / Points Possible, then that percentage is compared to the given scale. I added a custom scale option, and an option for plus and minus grades. Enjoy! The grading scale used for letter grades is as follows: A+ 100 | B+ 87-89 | C+ 77-79 | D+ 67-69 | A 93-96 | B 83-86 | C 73-76 | D 63-66 | A- 90-92 | B- 80-82 | C- 70-72 | D- 60-62 | F below 60 | You may also want to try: Grade Point Average (GPA) Calculator |