What does "weighted" mean in a course grade?
A weighted grade is a grade where each component contributes a different share of the final score. Most college courses follow this model: homework might be 15% of the grade, quizzes 15%, two midterms 20% each, and a final 30%. The weighted grade calculator at allgradecalculator.com handles any combination of weights.
Formula
weighted_grade = Σ(score_i × weight_i) / Σ(weight_i)
If your weights already sum to 100, the divisor is 100 and the formula simplifies to Σ(score_i × weight_i) / 100. The calculator works either way — it always normalises by total weight.
Step-by-step
- Add a row for every weighted item.
- Type the score you received and the maximum possible score (the calculator converts to a percentage internally).
- Type the weight (e.g.
30for 30%). - Confirm the total weight equals 100% — if it doesn't, the calculator prints a small amber warning.
- Read your live weighted grade and letter grade in the result panel.
Real-world examples
| Item | Score | Weight | Contribution |
|---|---|---|---|
| Homework | 92% | 15% | 13.8 |
| Quizzes | 85% | 15% | 12.75 |
| Midterm 1 | 78% | 20% | 15.6 |
| Midterm 2 | 82% | 20% | 16.4 |
| Final | 88% | 30% | 26.4 |
| Total | 84.95% | ||
Common pitfalls
- Forgetting that extra-credit weights are added to the 100%, not normalised into it.
- Mixing percentage scores with raw points in the same row.
- Treating dropped scores as zeros — instead, omit those rows from the calculator.
- Entering weights that already include a multiplier (e.g. "30 out of 100" — just enter
30).
When to use the weighted grade calculator
Use this calculator at the start of the semester to map your grading scheme, at the midpoint to confirm you're on track, and again the week before finals to plan your study time. Pair it with the final exam calculator for a dedicated "what do I need on the final?" view.
allgradecalculator.com keeps the weighted grade calculator entirely browser-side: nothing you enter is sent to a server.