Everyday Calculators
Use this weighted grade calculator to combine category scores and weights into an estimated course grade.
Live calculator
Based on 100% total entered weight.
Weighted contribution after multiplying each score by its weight.
| 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 |
Quick answer
Weighted Grade Calculator calculates weighted grade from category scores and category weights. The visible formula is Weighted grade = sum(category score x category weight) / sum(category weights).
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%.
How to use
Example
Calculator use
Before relying on it
Details
These notes make the assumptions explicit, especially where the same search query can mean slightly different things.
If the weights add to 80 or 120 instead of 100, the calculator divides by the total entered weight.
Use the gradebook average for assignments, quizzes, exams, or projects rather than adding individual assignment points here.
Dropped grades, late penalties, curves, and minimum-exam policies can change the official result.
Benchmarks
The calculator is a decision aid, not a fixed rule. Use the output to compare scenarios and document your assumptions. Benchmark ranges are broad planning heuristics unless this page names a specific source for the range.
Matches many syllabus grade breakdowns.
Useful when only graded categories so far are entered.
A total over 100 can be valid in some systems, but often signals a duplicate category.
Calculator accuracy
The formula, inputs, example, and limitations are shown so the result is checkable, not just a number in a box.
Weighted grade = sum(category score x category weight) / sum(category weights)
Category scores, Category weights
Everyday results are quick planning checks. Unit choices, rounding, labels, measurements, local prices, and real-world constraints can change the final decision.
June 6, 2026
Toolkit Shelf. Weighted Grade Calculator. Last reviewed June 6, 2026. https://toolkitshelf.com/tools/weighted-grade-calculator
FAQ
Multiply each category score by its category weight, add those weighted points, then divide by the total weight entered.
They usually should match the syllabus, but this calculator normalizes by the total entered weight so partial category setups still work.
You can include extra credit by raising the relevant category score or adding it according to your class policy.
Match the result to the task type: shopping tools depend on the same unit and usable quantity, home-project tools depend on field measurements and waste, date/time tools depend on counting rules, and conversion tools depend on the unit system.
Round for readability after checking the formula and units. Keep more precision when the result feeds another calculation, and add a task-specific buffer only when shortage, waste, or timing risk matters.
Different tools may use different rounding, assumptions, default rates, methods, formulas, or input timing. Compare the visible method and inputs before relying on the output.