How Does This Calculator Work?
The calculator multiplies each category's score by its weight, adds those together, then divides by the total weight — giving you a properly weighted average rather than a simple one.
Many courses weight different categories — homework, quizzes, midterms, a final exam — differently toward your final grade. This calculator combines up to three weighted categories into a single final percentage.
Example Calculation
Course Grade Example
Homework 20% (95), Midterm 30% (85), Final 50% (78).
((20×95)+(30×85)+(50×78))/100 = 83.6% final grade.
Tips
Weights should typically add up to 100 (e.g. homework 20, midterm 30, final exam 50) — but the formula also works correctly with weights that add up to any total, since it divides by the sum of weights used.