What is a semester grade calculator?
A semester grade calculator combines several graded periods or components when they contribute different percentages to the final semester mark. Common inputs can include quarters, trimesters, projects, midterms and final exams.
Why must the weights total 100%?
A complete semester grade represents the full course weighting, so all included components should account for the entire 100%. If your course is still in progress and not all components are known, use the general Grade Calculator, which can normalize a partial weight.
Semester grade formula
Each component score is multiplied by its weight as a decimal. The weighted contributions are then added. For example, an 88% quarter weighted at 40% contributes 35.2 percentage points to the semester total.
Match the school’s weighting rules
Use the percentages published in the syllabus or gradebook. Schools may average quarters first, round intermediate scores, or apply special final-exam rules, which can make the official result differ from a simple weighted calculation.