Weighted Grade accuracy and testing

Formula source

• 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%.

Test cases

Known limitations

• This page documents the checked-in calculator logic and does not certify results for every real-world edge case.
• Use the result as a planning estimate unless the calculator page states a stricter purpose.

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.

Unit handling

• Category 1 Score accepts values in %.
• Category 1 Weight accepts values in %.
• Category 2 Score accepts values in %.
• Category 2 Weight accepts values in %.
• Category 3 Score accepts values in %.
• Category 3 Weight accepts values in %.
• Category 4 Score accepts values in %.
• Category 4 Weight accepts values in %.
• Weighted Average is displayed in %.
• Total Weight is displayed in %.

Rounding rules

• Number displays use up to 2 decimal places in the calculator UI.

Version history

Change log