Grade Calculator (Weighted Average)
Find your current overall grade in a course where assignments, quizzes and exams carry different weights. Enter your scores and each component's weight — partial-semester standing works too.
How to use this calculator
- Enter your scores as percentages, comma-separated, in any order.
- Enter each component's weight from the syllabus, in the same order.
- Press Calculate — if weights don't reach 100%, you get your standing on completed work.
Formula used
Each score is multiplied by its weight, summed, then divided by the total weight used. Dividing by the weight total (not 100) is what makes mid-semester standings correct before all components exist.
Example calculation
Scores 85, 92, 78, 88 with weights 20, 10, 30, 40:
Weighted sum = 1,700 + 920 + 2,340 + 3,520 = 8,480 → grade = 8,480 ÷ 100 = 84.8% (B). Note how the 40%-weight project pulls the average up more than the 10% quiz.
How weighted grading works
In weighted grading, each component's influence equals its syllabus weight — a 40% final moves your grade four times as much as a 10% quiz. That's why a simple average of your scores usually misstates your real standing, sometimes badly.
Weights also tell you where effort pays: with a 30% midterm behind you and a 40% final ahead, most of your grade is still undecided. Pair this with the final grade calculator to see exactly what the remaining work must deliver.
Why use this calculator?
- Know your true current standing, not the misleading simple average.
- Handle mid-semester situations where only part of the grade exists yet.
- See which components actually move your grade before allocating study time.
Frequently asked questions
How do I calculate my grade with different weights?
Multiply each score by its weight, add everything up, and divide by the sum of the weights. Scores 80 and 90 with weights 30 and 70: (80×30 + 90×70) ÷ 100 = 87%.
What if my weights don't add up to 100?
The calculator divides by whatever the weights total, giving your grade on completed work. If they exceed 100, double-check the syllabus — components sometimes overlap (e.g. "best 3 of 4 quizzes").
How are letter grades assigned from percentages?
A common US scale: A ≥ 93, A− ≥ 90, B+ ≥ 87, B ≥ 83, and so on, with below 60 an F. Cutoffs vary by school and professor — the syllabus always wins.