1
Add each component
Use actual assessment categories or components.
Education
Free tool
Weighted Grade Calculator
Combine multiple course components with different weights to calculate your overall weighted grade.
No account needed · Calculated in your browser
Calculate your weighted grade
Add each graded component and its share of the course. Weights must total exactly 100%.
Result
How to use this tool
Follow these steps and check the result in context.
2
Enter its grade and weight
Enter a percentage and its course weight for each row.
3
Check that weights total 100%
The native calculator requires exactly 100% total weight.
Understand the result
A weighted grade combines several course components while giving each component the share of the final grade specified by the course. A 40% final exam affects the overall result more than a 10% quiz category, even when both use the same 0–100 grading scale.
Weighted grade formula
For each component, the weighted contribution is grade × weight ÷ 100. The overall weighted grade is the sum of all component contributions.
Weighted grade = Σ(grade × weight ÷ 100)
Worked example
Suppose homework is 90% and worth 30%, a midterm is 82% and worth 30%, and a final exam is 88% and worth 40%. Their contributions are 27, 24.6, and 35.2 percentage points. Adding them gives a weighted grade of 86.8%.
Check the rules and limits explained on this page.
How the calculator works
Enter every component that contributes to the final course grade, its percentage grade, and its course weight. The calculator checks each value and requires the entered weights to total exactly 100% before producing a final weighted grade.
Weighted vs. unweighted grade
An unweighted arithmetic mean gives every entered grade equal influence. A weighted grade instead uses the importance assigned by the course. If assignments, exams, and projects have different course weights, a simple average can give the wrong overall result.
Why weights must total 100%
This tool is designed to calculate the complete final grade for a course. Requiring exactly 100% prevents a partial set of components from being silently rescaled. A total of 99.99% or 100.01% is reported as entered rather than treated as 100%.
Weighted categories
You can enter categories such as homework, quizzes, projects, midterms, and finals, or individual components if your syllabus assigns each one a direct share of the course. Use the weights that actually determine the final grade; do not substitute the number of assignments for the category weight.
Common mistakes
- Entering category weights that do not add to exactly 100%.
- Using raw assignment points instead of percentage grades.
- Averaging category grades first when the syllabus assigns different weights to the individual items.
- Confusing this calculation with the grade needed on remaining coursework or a projected final grade.
Learn with this tool
Related guide
How Weighted Grades Work
Learn the weighted-grade formula, percentage and decimal weights, normalization, incomplete weight totals and common calculation mistakes.
Read guideRelated guide
Weighted Grade vs Final Grade vs GPA
Understand how weighted grades, final grades, required exam grades, GPA and weighted averages differ, with one coherent student example.
Read guideMore useful tools
View allFrequently asked questions
Can the weights add to 99.99%?
No. For this complete-course calculator, the weights must total exactly 100%. Correct the weights to match your syllabus.
Can I use decimal grades and weights?
Yes. Decimal values are accepted within the valid ranges, and the calculation is performed before presentation rounding.
Is this the same as a final grade calculator?
No. This tool combines multiple known component grades. The Final Grade Calculator instead projects a final course grade from completed work and an expected average on the work that remains.
Does this calculate GPA?
No. GPA uses grade points and typically credit hours rather than percentage course weights.