Weighted Grade Calculator
Weighted Grade Calculator calculate class average by weight weighted score total grade category calculatorCombine scores that count differently
Enter each category's current percentage and its share of the final grade. Use only paired rows. The calculator multiplies every score by its decimal weight and adds the contributions.
The weighted-grade formula
For each category, divide its weight by 100 and multiply that fraction by the category score. Add all category contributions. A homework average of 90% with a 20% weight contributes 18 points to the course grade. A test average of 80% with a 50% weight contributes 40 points, even though its raw score is lower, because tests count more.
Worked example
Suppose homework is 90 at 20%, quizzes are 80 at 30%, and exams are 75 at 50%. Contributions are 18, 24, and 37.5. Their sum is 79.5%, and the weights total exactly 100%. The weighted result is therefore the overall course percentage for those categories.
When weights total less than 100%
The tool reports a normalized grade whenever entered weights do not total 100. This answers, “How am I doing on the work represented here?” For example, 18 weighted points out of 20 entered weight normalize to 90%. It also shows total weight so you can recognize missing categories. Do not mistake the normalized result for an official overall grade if future or unentered work still matters.
Scores above 100 and grading rules
Extra credit can produce a category score above 100, so the calculator permits it. Negative scores and negative weights are rejected. Schools may drop assignments, replace exams, cap extra credit, round by category, or calculate from raw points rather than displayed category percentages. Follow the syllabus or gradebook method when it differs.
Assumptions and limitations
Inputs are percentages, not points earned and points possible. Blank row pairs are ignored, while half-filled rows cause an error. Results are rounded to two decimals only for display. The page does not predict missing work, map percentages to letter grades, or determine the score needed on a final exam. Use the Final Grade Calculator for that separate question.
Weighted Grade FAQ
Must weights equal 100%?
No, but a complete final-grade calculation normally should. The displayed total reveals any gap.
Can I enter extra credit?
Yes. Scores may exceed 100 when the grading policy allows it.
Why does the gradebook differ?
It may use raw points, hidden assignments, different rounding, or special category rules.