Formula
Weighted grade formula
Weighted grade = sum(category score x category weight) / sum(category weights)Enter each category score and weight as percentages. The calculator normalizes when weights do not add to exactly 100%.
Weighted Grade Calculator
Use this weighted grade calculator to combine category scores and weights into an estimated course grade.
Live calculator
Weighted grade
Weighted grade89.8%
Based on 100% total entered weight.
Weighted points89.8
Weighted contribution after multiplying each score by its weight.
Grade breakdown
| Category | Score | Weight | Contribution |
|---|---|---|---|
| Assignments | 92% | 30% | 27.6 pts |
| Quizzes | 84% | 15% | 12.6 pts |
| Exams | 88% | 35% | 30.8 pts |
| Project or final | 94% | 20% | 18.8 pts |
How to use
Steps
- Enter the current score for each grading category.
- Enter the syllabus weight for that category.
- Leave unused categories at zero weight.
- Review the weighted grade and category contribution table.
Example
Sample calculation
Assignments92% x 30%
Quizzes84% x 15%
Exams88% x 35%
Weighted grade89.4%
Calculator use
Best for
- Checking calendar, work-hour, school, deadline, age, or duration math before copying the result elsewhere.
- Comparing inclusive versus exclusive dates, breaks, grading weights, or time spans with the assumptions visible.
Before relying on it
Check first
- Mixing inclusive and exclusive date counting, time zones, overnight shifts, unpaid breaks, holidays, or school-specific grading rules.
- Rounding time or grades too early and then using the rounded result in another calculation.
- Treating a planning result as payroll, HR, transcript, legal deadline, or official school policy.
Details
What to know before using the result
Weight totalNormalizes entered weights
If the weights add to 80 or 120 instead of 100, the calculator divides by the total entered weight.
Category scoreUse each category average
Use the gradebook average for assignments, quizzes, exams, or projects rather than adding individual assignment points here.
Policy checkSyllabus comes first
Dropped grades, late penalties, curves, and minimum-exam policies can change the official result.
Benchmarks
How to read the result
Weights total 100%: Standard setup.
Matches many syllabus grade breakdowns.
Weights below 100%: Partial grade.
Useful when only graded categories so far are entered.
Weights above 100%: Check inputs.
A total over 100 can be valid in some systems, but often signals a duplicate category.
Calculator accuracy
Methodology and assumptions
Formula, inputs, limitations and review record
Formula
Weighted grade = sum(category score x category weight) / sum(category weights)
Inputs used
Category scores, Category weights
Limitations
Everyday results are quick planning checks. Unit choices, rounding, labels, measurements, local prices, and real-world constraints can change the final decision.
Review record
Catalog QA baseline on June 6, 2026. This date marks the catalog-wide automated and editorial QA baseline, not a tool-specific expert review.
Cite this page
Toolkit Shelf. Weighted Grade Calculator. https://toolkitshelf.com/tools/weighted-grade-calculator
FAQ
Common questions
How do I calculate a weighted grade?
Multiply each category score by its category weight, add those weighted points, then divide by the total weight entered.
Do weights need to add to 100?
They usually should match the syllabus, but this calculator normalizes by the total entered weight so partial category setups still work.
Can this handle extra credit?
You can include extra credit by raising the relevant category score or adding it according to your class policy.
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