Semester Grade Calculator
Work out your weighted semester grade. Enter each category's grade and its weight, homework, quizzes, tests, the final, and this semester grade calculator returns your overall percentage and letter grade.
Reviewed & updated for 2026 · How we calculate
How to calculate a weighted grade
A weighted semester grade multiplies each category's grade by how much it counts, then averages. The formula is grade = Σ(category grade × weight) ÷ Σ(weight). So a 70% on a final worth 30% of your grade pulls harder than a 70% on homework worth 10%.
Type each category's grade and weight in the calculator. It sums them automatically and shows your total weight, so you can confirm the categories add up to 100% the way your syllabus says.
What you need on the final
To find the final-exam score you need for a target grade, fill in every other category, then change just the final's grade until the result hits your goal. If even a 100% on the final can't reach your target, you'll see it immediately, useful for deciding where to focus your study time.
FAQs
How do I calculate my semester grade?
Multiply each category's grade by its weight, add those up, and divide by the total weight. For example, Homework 92% × 15 + Quizzes 88% × 15 + Midterm 85% × 25 + Final 90% × 30 + Participation 95% × 15 = 8,950 ÷ 100 = 89.5%. The calculator above does this as you type.
What if my category weights don't add up to 100?
That's fine, the calculator divides by whatever your weights total, so it still gives the correct weighted average. It also shows your total weight so you can check it against your syllabus, where the categories should normally sum to 100%.
How do I figure out what I need on the final?
Enter every category except the final with its grade and weight, then try different final-exam grades in that row until your semester grade hits your target. Because the final's weight is fixed, you'll quickly see the score you need (or whether your target is still reachable).
What's the difference between weighted and points-based grades?
Weighted grading sets each category to a percentage of the final grade (for example, tests are 40%). Points-based grading totals raw points earned out of points possible. This calculator handles the weighted method, the most common for semester and final grades. For a simple points total, use a basic average instead.
How do percentages map to letter grades?
A common US scale: A 93–100, A- 90–92, B+ 87–89, B 83–86, B- 80–82, C+ 77–79, C 73–76, C- 70–72, D+ 67–69, D 63–66, D- 60–62, F below 60. Schools vary, so check your syllabus, the calculator uses this standard scale for the letter grade it shows.