Calculate your overall grade from categories with different weights, such as homework, quizzes, a midterm and a final.
Each category contributes its score times its weight. If the weights add up to 100, the result is your final grade; if not, the tool divides by the total weight so it still works.
Each category's score is multiplied by its weight, the results are added up, and the total is divided by the sum of the weights. A category worth 35% therefore affects your grade far more than one worth 10%.
Ideally yes, and the tool shows the total so you can check. If they do not add to 100, it still divides by the actual total so the result stays sensible, which is handy when you are partway through a course.
For a single remaining exam, the final grade calculator is the quicker tool. Use this one when you want the overall grade from several completed categories.