Score Calculator
Get percentage, grade and weighted total from scores and full marks.
Input Data
Results
At a glance:Single: percentage = earned ÷ total × 100%. Weighted: weighted total = Σ(earnedᵢ ÷ totalᵢ × weightᵢ) ÷ Σ weightᵢ × 100% (weights normalized). Grade (default): ≥90 優/A, 80–89 良/B, 70–79 普/C, 60–69 可/D, <60 差/F. Bands can be adjusted per institution.
Formula
single % = earned ÷ total × 100.
weighted % = Σ(earnedᵢ ÷ totalᵢ · wᵢ) ÷ Σ wᵢ × 100.
How to Use
- simple: enter earned and full marks.
- weighted: enter a JSON item array.
Case Studies
85/100 → 85% 良(B)
Percentage 85; grade B.
Weighted 0.4×90% + 0.6×80%
= (0.4·0.9 + 0.6·0.8) = 0.84 → 84% 良(B).
FAQ
Grade bands?
Default 90/80/70/60 boundaries; actual depends on school/institution.
Weights normalized?
Weighted total divides by the sum of weights, so weights need not sum to 1.
Negative / over-full?
This tool limits earned ∈ [0, total]; out-of-range is flagged.
GPA?
Grades map to GPA (e.g. A=4.0); this tool gives the grade, not GPA directly.
Many items?
weighted mode supports any number of items.
Precision?
2 decimals.
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References
Content review: Calculatorism Lifestyle Team. Results are for reference only; please refer to the relevant authorities for the official figures.