Weighted Grade Calculator
Practice and calculate weighted grade with our free tool. Includes worked examples, visual aids, and learning resources.
Formula
Weighted Average = ฮฃ(Weight ร Score) / ฮฃ(Weights)
Multiply each category's score by its weight percentage, sum all the products, then divide by the sum of the weights. When weights sum to 100%, the divisor is 1 and the weighted sum is the final grade.
Worked Examples
Example 1: Standard Course Weighting
Problem: A course has: Homework (25%, scored 95%), Quizzes (15%, scored 88%), Midterm (25%, scored 82%), Final (35%, scored 79%). Calculate the weighted average.
Solution: Homework: 0.25 ร 95 = 23.75\nQuizzes: 0.15 ร 88 = 13.20\nMidterm: 0.25 ร 82 = 20.50\nFinal: 0.35 ร 79 = 27.65\nWeighted Average = 23.75 + 13.20 + 20.50 + 27.65 = 85.10%
Result: Weighted average: 85.10% (B, GPA 3.0)
Example 2: Exam-Heavy Course
Problem: A course has: Participation (10%, scored 100%), Midterm (40%, scored 72%), Final (50%, scored 68%). What is the weighted grade?
Solution: Participation: 0.10 ร 100 = 10.0\nMidterm: 0.40 ร 72 = 28.8\nFinal: 0.50 ร 68 = 34.0\nWeighted Average = 10.0 + 28.8 + 34.0 = 72.8%
Result: Weighted average: 72.80% (C-, GPA 1.7)
Frequently Asked Questions
What is a weighted grade?
A weighted grade accounts for the relative importance of each assignment category. Instead of treating all scores equally, each category (homework, exams, projects) is assigned a weight percentage reflecting its importance. A 95% on homework worth 10% of your grade contributes less than an 80% on a final exam worth 40%.
How do I calculate a weighted average?
Multiply each category's score by its weight (as a decimal), then sum all the products. For example: Homework (20% weight, 90% score) = 0.20 x 90 = 18. Exams (80% weight, 75% score) = 0.80 x 75 = 60. Weighted average = 18 + 60 = 78%. Make sure all weights add up to 100%.
How do weighted grades differ from unweighted grades?
Unweighted grades treat all assignments equally โ each score has the same impact regardless of importance. Weighted grades assign different importance levels. In an unweighted system, a quiz and a final exam each count the same. In a weighted system, the final might count 10 times more than a quiz.
How do I convert a weighted average to a letter grade?
Most schools use a standard 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 (60-69%), F (below 60%). Some institutions use different cutoffs, so always check your school's specific grading policy.
Is my data stored or sent to a server?
No. All calculations run entirely in your browser using JavaScript. No data you enter is ever transmitted to any server or stored anywhere. Your inputs remain completely private.
Is Weighted Grade Calculator free to use?
Yes, completely free with no sign-up required. All calculators on NovaCalculator are free to use without registration, subscription, or payment.