Weighted Grade Calculator
Most courses don't grade every assignment equally. A final exam usually counts far more than a single homework set.
This weighted grade calculator handles that automatically. Enter each assignment's score and its weight, and get your true overall course grade instantly — whether your class is set up like Canvas, Blackboard, Moodle, Google Classroom, or a plain paper syllabus.
What Is a Weighted Grade?
A weighted grade means different categories of work count differently toward your final course grade. Instead of simply averaging every score, each one is multiplied by its assigned weight before being combined.
A final exam worth 50% of the grade has five times the impact of a homework category worth 10% — even if both scores are identical.
How to Use This Weighted Grade Calculator
- Enter the name of each assignment (optional, but helps keep entries organized against your syllabus).
- Enter the score you earned and the maximum possible score for that assignment.
- Enter the weight percentage for that category, exactly as listed in your syllabus.
- Add a row for every graded item — homework, quizzes, tests, projects, and exams.
- The calculator multiplies each score by its weight and combines them instantly, showing your current overall grade and letter grade as you type.
The Weighted Grade Formula
Weighted Grade = (w1×g1 + w2×g2 + w3×g3 + …) ÷ (w1 + w2 + w3 + …)
Worked Example: Step by Step
Suppose your syllabus lists: Homework — 20%, Tests — 30%, Final Exam — 50%. Your scores are 88% on homework, 76% on tests, and 91% on the final.
- Homework: 88 × 20 = 1,760
- Tests: 76 × 30 = 2,280
- Final Exam: 91 × 50 = 4,550
- Add them: 1,760 + 2,280 + 4,550 = 8,590
- Divide by total weight: 8,590 ÷ 100 = 85.9%
That final number is your weighted course grade — a B in most standard scales. The calculator above runs these same steps instantly, for any number of categories.
Current Grade vs. Target (What-If) Grade
There are two different questions a weighted grade calculator can answer:
- Current grade: based only on assignments you've already completed, using the weight entered so far.
- What-if / target grade: if you know your desired final course grade, you can work backward to see what score you'd need on remaining assignments.
This tool shows your current grade based on whatever weights you've entered. If your entered weights don't yet add up to 100%, that's expected mid-semester — it simply reflects your grade so far.
Typical Category Weights by Assignment Type
Every syllabus is different, but common weight ranges include:
- Weekly quizzes: 5-15%
- Homework and worksheets: 10-20%
- Lab reports and practicals: 10-20%
- Essays and research papers: 15-25%
- Group projects and presentations: 15-25%
- Midterm exams: 20-30%
- Final exams: 25-50%
Always use the exact weights from your course syllabus rather than these averages — this calculator only reflects the numbers you enter.
Points-Based Grades vs. Percentage Weights
Some instructors grade using raw points (like 450 out of 500 total points across the semester) instead of separate percentage-weighted categories.
If your course works this way, enter each assignment's earned score and its maximum points as the "score ÷ max," and leave the weight field blank. The calculator will treat it as a simple points-based average instead of a percentage-weighted one — just as usable as a plain grade calculator without weight.
Dropped Scores and Extra Credit
Many syllabi drop the lowest score in a category, or offer extra credit points. This calculator doesn't apply either automatically.
- Dropped scores: simply leave out any assignment your teacher has explicitly excluded.
- Extra credit: add the bonus points to the relevant assignment's earned score before entering it, rather than creating a separate row.
Rounding Rules
Whether 89.5% rounds up to an A- or stays a B+ depends entirely on your school's policy — some round to the nearest whole percent, others truncate.
This calculator shows the exact, unrounded percentage, so you can apply your own institution's rounding rule with certainty rather than guessing from an already-rounded number.
Quarter, Semester, and Full-Course Grades
This calculator works the same way whether you're tracking a single quarter, a full semester, or an entire course — only what you include changes.
For a quarter grade, enter just the assignments from that grading period. For a semester or full-course grade, include every category across the whole term. If your school averages multiple quarter grades into a semester grade using its own formula, treat each quarter's result as one input into that separate calculation.
Common Mistakes to Avoid
- Entering weight as if it were a score. Weight is the percentage the category counts toward your final grade, not the score you earned.
- Forgetting a category entirely. A missing row makes your current grade look artificially high or low.
- Applying dropped-score policies incorrectly. Only remove scores your teacher has explicitly excluded.