Grade Calculator — Weighted Scores, Free | How to use and interpret results
Compute a weighted mean by summing score-times-weight and dividing by the total weight. Weights may add to 1, 100 or another total because the ratios are normalized.
- Runs in your browser
- Nothing is uploaded
- No signup; device limits apply
Numbers stay on your device. Nothing is sent to a server.
One item per line: score, weight. Weights can be 0.4 or 40 — they are scaled by their own sum.
How to use this tool
Enter one score and weight per comma-separated line. If an assessment should be dropped, remove its line and note that the remaining weights become the new denominator.
Results and examples
A score of 80 at weight 1 and 100 at weight 3 averages 95. The contribution column is score times weight, not an already-normalized percentage contribution.
Worked example
A score of 80 at weight 1 and 100 at weight 3 averages 95. The contribution column is score times weight, not an already-normalized percentage contribution.
Limitations
- Letter-grade conversion and institutional credit policies are not applied.
- You must decide how missing and dropped assessments should enter the model.
Fields
| Field | Guidance and constraints |
|---|---|
| Scores and weights | One item per line: score, weight. Weights can be 0.4 or 40 — they are scaled by their own sum. |
Data handling
Processing stays in the current browser tab; the site does not upload tool input for the calculation itself.
Sources
Frequently asked questions
What is the average with weights 1 and 3?
A score of 80 at weight 1 and 100 at weight 3 averages 95. The contribution column is score times weight, not an already-normalized percentage contribution.
Can I simply add the contribution column?
Letter-grade conversion and institutional credit policies are not applied. You must decide how missing and dropped assessments should enter the model.
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