Grade Calculator
Calculate your weighted course grade. Enter each category's grade and weight to see your overall percentage and letter grade.
| Item | Grade % | Weight % | |
|---|---|---|---|
How to use this calculator
Add each graded component — homework, quizzes, exams — with its grade and weight. The calculator returns your overall percentage, the matching letter grade, and your total weight so you can check it sums to 100%.
How weighted grades work
Most courses weight categories differently — a final might count far more than homework. Your overall grade is the weighted average: each grade contributes in proportion to its weight, not equally. That's why a strong score on a heavily weighted exam moves your grade more than the same score on a small assignment.
Worked example
Homework 92 (20%), midterm 85 (30%), final 88 (50%): (92×20 + 85×30 + 88×50) ÷ 100 = 87.9%, a B+.
The formula
Overall = Σ(grade × weight) ÷ Σ(weight)
Frequently asked questions
How do I calculate my weighted grade?
Multiply each category's grade by its weight, add those up, and divide by the total weight. For example, an 85 worth 30% and a 92 worth 70% gives (85×30 + 92×70) ÷ 100 = 89.9%.
Do my weights need to add up to 100%?
Ideally yes, but the calculator divides by whatever total weight you enter, so partial syllabi still work. If your weights total 100%, the result is your true course grade.
How is the letter grade determined?
It uses a common US scale: 93+ is an A, 90–92 an A-, 87–89 a B+, and so on. Your school's exact cutoffs may differ slightly.
What grade do I need on my final?
Enter your current categories and add the final as a row with its weight. Try different final scores to see what you'd need to reach your target overall grade.