Weighted grade calculator

Weighted grade = Σ(weight × score) ÷ Σ(weight)Σ means “add up for every category.” Use percents for both weight and score.

1. MultiplyEach category’s score by its weight. Homework at 95% with a 15% weight gives 15 × 95 = 1,425.
2. Add upDo the same for every category with a score: 1,425 + 1,680 + 3,160 + 500 = 6,765.
3. DivideBy the weights you used. They add up to 80 because the final isn’t graded yet: 6,765 ÷ 80 = 84.56%, a B.

When the weights add up to 100, dividing by 100 is the same as the usual “score × weight” sum. When they don’t, because a category is still empty or the syllabus uses points, dividing by the actual total normalizes them. The result is your grade on the work graded so far. To see what the empty category needs, put your current grade into the final grade calculator.

What if my weights don’t add up to 100%?

The calculator divides by the weights you entered instead of 100. That gives your grade on the categories graded so far. It says so on the result whenever it happens.

My class uses points, not percents. What do I enter?

Enter each category’s points possible as its weight and your percent in that category as the score, or just divide your total points by total possible points with the test score calculator.

Why is my grade lower than the average of my scores?

A plain average treats every category the same. If your lowest score is in the heaviest category, like tests at 40%, the weighted grade comes out lower than the plain average.

Does my portal calculate it the same way?

Most grade portals use this weighted formula, but some drop the lowest score, cap extra credit or round. Check your school’s grading policy or ask your teacher if the numbers don’t match.