Education
Grade Calculator
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Runs in your browser
How to use it
Using the grade calculator
- 01
Enter each score
Use the percentage you received on every graded item.
- 02
Match the syllabus weights
Copy the weights exactly as your instructor published them.
- 03
Check the warning
If the weights miss 100%, the interpretation tells you what they actually sum to.
Good to know
Why weighting changes everything
Averaging raw scores treats a 5-point quiz like the final exam. Weighting fixes that: a 95% on something worth 10% of the grade moves your average far less than an 85% on a 40% final. Always reproduce the syllabus weights, not your gut.
The missing-weight trap
Many students forget that “remaining work” still carries weight. If two exams worth 30% each are done, your ungraded final silently holds the other 40%; plan target scores accordingly instead of assuming you are safe.
Grouping categories
Syllabi often weight categories (homework 20%, labs 30%, exams 50%). Average each category first, then feed those category averages in as your four scores with the category weights.
How it's calculated
The math behind this calculator
Overall = Σ(scoreᵢ × weightᵢ) ÷ Σ(weightᵢ)Each assignment contributes its score multiplied by its share of the total weight. When your weights sum to exactly 100%, this is the standard weighted average teachers publish in syllabi; when they do not, the result is still computed but flagged so you can fix the syllabus math.
Assumptions & limitations
- Scores are percentages from 0 to 100.
- Weights are percentages of the course grade.
- Assignments not yet graded should be left at 0 or excluded by setting their weight to 0.
Worked example
Scoring 85%, 92%, 78% and 88% on four equally weighted assignments lands you at an 85.75% overall.
FAQ
Frequently asked questions
- What if my weights do not add to 100%?
- The calculator still computes a weighted average over the weights you entered but warns you; most instructors expect exactly 100%.
- Can I handle dropped lowest scores?
- Yes; enter only the surviving assignments and redistribute their weights proportionally across 100%.
- Does it work with points instead of percent weights?
- Convert points to percentages first (earned ÷ possible × 100), then weight each item by its share of total course points.
- What score do I need on remaining work?
- Pair this with the final-grade calculator: it converts your current standing and the remaining weight into the exact score required.
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