How to use this calculator
- Add a grade and credits for each course; leave unused rows blank.
- The weighted score updates as you type. Use Copy result or Share to keep it.
Method
Weighted score = Σ wᵢ × (eᵢ ÷ pᵢ) ÷ Σ wᵢ × 100; Points score = Σ eᵢ ÷ Σ pᵢ × 100
- eᵢ
- points earned on item i
- pᵢ
- points possible on item i
- wᵢ
- weight of item i
Worked example
- Item scores: 45/50 = 90%, 34/40 = 85%, 70/100 = 70%.
- Weighted = 0.20 × 90 + 0.30 × 85 + 0.50 × 70 = 18 + 25.5 + 35 = 78.5%.
- Total points = 149 ÷ 190 = 78.42% for comparison.
With weights of 20%, 30% and 50%, these scores give a weighted 78.5% (78.42% on raw points).
What the result means
When the weights match your syllabus, the weighted score is your course grade so far. The points score shows what a points-based teacher would record instead.
Assumptions and limits
- Each row is one item or one category total with its syllabus weight.
- Dropped lowest scores, extra credit and curves are not applied.
Questions
My weights only add to 60% so far. Is that a problem?
No. The calculator scales by the weights entered, giving your grade on the work completed so far.
Should I enter each homework or the category total?
Either. For category weights, enter the category’s total points earned and possible with the category weight.