About this Weighted Grade
Most college and high school courses use a weighted grading system. This means a test is worth much more than a homework assignment. This calculator lets you input your average score for each category (Homework, Quizzes, Exams) and its weight to determine your final grade.
Who this calculator is for
- Students in syllabus-based courses where homework, quizzes, exams, and finals each have different weights.
- Teachers and tutors checking whether category averages match the current gradebook total.
- Anyone trying to understand how much a strong or weak exam matters relative to smaller assignments.
When to use it
- Calculate your current class average when different categories count different amounts.
- Model what happens if one category score improves before the term ends.
- Estimate your standing so you can decide what score you need on the final component.
How to use this calculator
- Enter the Score you have for a category (e.g., 90% average on Homework).
- Enter the Weight of that category from your syllabus (e.g., 20%).
- Repeat for all categories.
- The result is your Weighted Average.
Key assumptions
- Each score is treated as the current average for that category, not a list of individual assignment grades.
- Only categories with a positive weight are included in the calculation.
- If your class uses a raw points system or drops the lowest score, the official course grade may differ.
Accuracy and testing
Review formula sources, default test cases, assumptions, unit handling, rounding rules, and changelog for this calculator.
How this calculator works
The formula is: Sum of (Score × Weight) / Sum of Weights.
Example:
Homework: 90 × 0.20 = 18
Tests: 80 × 0.40 = 32
Final: 85 × 0.40 = 34
Total = 18 + 32 + 34 = 84%.
Inputs explained
Score
Your average percentage for that specific category.
Weight
How much that category counts towards the final grade. Total weights should ideally add up to 100%.
Understanding your results
The Weighted Average is your current standing in the class. If your weights don't add up to 100% yet (e.g., Final Exam not taken), the result shows your grade *based on the work completed so far*.
Example scenarios
Syllabus Example
HW 20% (Score 100), Quizzes 30% (Score 80), Exams 50% (Score 70). Calculation: (100*.2) + (80*.3) + (70*.5) = 20 + 24 + 35 = 79%.
Key Features
- Supports 4 Categories
- Partial Weight Support
- Instant Average
Tips & Best Practices
- Check your syllabus! Weights are the rules of the game.
- If you ace the small stuff (homework), it provides a buffer for harder exams.