Final Grade Calculator — Weighted Grade Calculator
The category view of the same arithmetic: enter a score and a weight for each grading category — homework, quizzes, midterm, final — and the calculator returns the weighted course grade. A syllabus weighting homework 20%, quizzes 20%, a midterm 25%, and a final 35% turns scores of 95, 88, 80, and 84 into an 86 overall. Weights that don't sum to 100 are averaged over the total entered, which is exactly how a grade stands mid-semester with categories still empty.
Final grade
Leave unused rows blank — rows with no weight are ignored.
Weighted grade
84.3%
Weighted average over 100% of total weight.
The needed score is (target − current × (1 − weight)) ÷ weight — plain weighted-average arithmetic on the numbers you enter, computed in your browser. Weights, drop-lowest rules, rounding, and letter cutoffs vary by instructor; confirm against your syllabus. Not academic advice.
Category weighting, the way syllabi actually write it
Most percent-based syllabi publish a category table, and the grade is the weighted average of category scores: with homework 20%, quizzes 20%, midterm 25%, and final 35%, scores of 95, 88, 80, and 84 give (95 × 20 + 88 × 20 + 80 × 25 + 84 × 35) ÷ 100 = 86. The instructive part is how the weights redistribute influence — the 95 homework average moves the grade less than the 84 final because the final carries almost twice the weight.
That redistribution is the planning insight: effort should follow weight. Five points on a 35% final move the course grade by 1.75 points; five points on 20% homework move it by 1. When categories are still empty, the calculator's convention of averaging over the weights entered shows your real standing so far — scores of 92, 85, and 78 each weighted 30 average to 7,650 ÷ 90 = 85 before the last 10% of the grade exists.
Points-based courses convert cleanly to weights
Some courses skip percentages and grade on a points budget — say 500 points across the semester. Those are still weighted courses in disguise: each item's weight is its share of the total points, so a 150-point final in a 500-point course is a 30% weight, and a 50-point quiz is 10%. Convert each category's points to a percent of the total and the weighted-grade view models the course directly.
The conversion also exposes a difference worth knowing: in a pure points course, "category averages" don't exist — a 10-point quiz and a 40-point quiz in the same category are simply worth different amounts. If your syllabus is points-based, weight each assignment (or each cluster of equal-point assignments) separately rather than averaging the category first, or the small quiz will count as much as the big one.
Questions
- What if my weights don't add up to 100?
- The calculator averages over the weights you enter: grade = Σ(score × weight) ÷ Σ(weight). Scores of 92, 85, and 78 each weighted 30 give 85 over the 90 points of weight entered — useful mid-semester, when part of the grade doesn't exist yet.
- Is a weighted grade the same as a GPA?
- No. This page averages scores within one course using the syllabus's category weights. A GPA averages letter-grade points across courses, weighted by credit hours — a separate calculation with different inputs.
- How do I use this with a points-based syllabus?
- Convert points to weights: each item's weight is its points divided by the course total. A 150-point final in a 500-point course is a 30% weight; enter the percentage score you earned on it next to that weight.