Semester grade calculator
High schools often run Q1 + Q2 + semester exam (classic 40/40/20) or similar. Enter each term percent and its weight — or use a preset — and get the semester percent and letter. You can leave the exam blank and ask what you need on it.
SEMESTER / EXAM NEEDED
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Enter numbers and calculate.
When to use — and when not to
When to use
Report card season; “what do I need on the semester exam?”; comparing 40/40/20 vs 45/45/10 school rules.
When not to
College course with homework/quiz/exam categories instead of quarters → weighted grade calculator. Single overall current + one final → final grade calculator.
Assumptions
Default preset 40% / 40% / 20% (Q1, Q2, exam). Alternate preset 45/45/10. Custom rows allowed. Scores are percents.
How it works
semester = (Q1×w1 + Q2×w2 + Exam×wE) / (w1+w2+wE) if exam empty: solve Exam for a target semester %
- Pick a school preset or enter custom term weights.
- Enter each quarter/term percent.
- Leave the exam blank to solve for a target, or enter the exam score.
- Read semester % and letter.
Examples
Q1 88, Q2 85, Exam 90, weights 40/40/20
semester ≈ 87.2% → B+ on default ± scale
Q1 76, Q2 80, exam weight 20%, want semester 80
needed on exam ≈ 88%
Gotchas
- Some districts average Q1/Q2 then weight the exam differently — match your handbook, not our preset.
- Midterm ≠ Q1. If your school uses midterm + final only, rename the rows.
- Plus/minus report cards may use a different conversion than your teacher’s classroom scale.
- Incomplete quarters — do not invent a 0; wait or estimate honestly.
Compare
College category weights? → weighted grade calculator.
Simple mean of tests? → grade average calculator.
One final for a college course? → final grade calculator.
Related
FAQ
Usually a weighted average of term grades and a semester exam — weights come from the school.