Calculator Inputs
Example Data Table
| Subject | Obtained | Total | Weight |
|---|---|---|---|
| Mathematics | 72 | 100 | 3 |
| English | 41 | 50 | 2 |
| Science | 33 | 40 | 2 |
Formula Used
- Subject Percentage: subject% = (obtained ÷ total) × 100
- Total-Based Percentage: overall% = (Σ obtained ÷ Σ total) × 100
- Mean of Subject Percentages: overall% = (Σ subject%) ÷ n
- Weighted Mean Percentage: overall% = Σ(weight × subject%) ÷ Σ(weight)
How to Use This Calculator
- Select a calculation mode that matches your grading policy.
- Add each subject, then enter obtained marks and total marks.
- If using credits, fill the weight/credit field for each subject.
- Adjust grade bands and rounding if your institution uses different rules.
- Press Calculate to view results above the form.
- Use CSV or PDF export to save and share your report.
Why average percentage is a practical snapshot
Average percentage converts mixed subject scores into one comparable number. Example: 68/100, 42/60, and 27/40 become 68.00%, 70.00%, and 67.50%. This calculator can output a total-based percentage (sum obtained ÷ sum total × 100) or an average-of-percentages view for quick comparisons across terms. It also reports overall obtained marks, total marks, and subject count clearly.
Entering subjects, totals, and optional weights
Add each subject with obtained and maximum marks. If credit hours apply, assign weights so higher-credit courses influence the result more. Weighted average percentage is computed as Σ(weight × subject%) ÷ Σ(weight), matching most semester and GPA-style reporting practices.
Reading the table and grade bands
The summary table lists each subject percentage, totals, and validation notes for missing values. Use rounding controls to match your report card. Grade bands translate percentages into levels. If your institution defines A as ≥80% and B as ≥70%, adjust thresholds to see your current band and distance to the next one.
Using the chart to locate gaps
The Plotly bar chart visualizes subject percentages side by side. A tight cluster suggests steady performance, while a wide spread signals priorities. If Mathematics is 55% and English is 82%, the gap is 27 points. Set a target and test scenarios by changing obtained marks to estimate improvement needs. Use color-coded hover labels to read exact values instantly.
Exporting results for tracking
CSV export supports spreadsheets, tutor updates, and longitudinal tracking. PDF export creates a printable summary with mode, totals, and per-subject breakdown. Save one report per assessment cycle to confirm progress, such as improving from 62.4% midterm to 71.0% final after focused revision. Attach the PDF to portfolios or counseling notes.
Checks that protect accuracy
Verify each subject total matches the paper. Entering 80 as the total instead of 100 inflates results. Avoid zeros unless the total is truly zero, and keep units consistent. Totals handle mixed scales safely, while simple averaging can mislead. Choose the calculation mode required by your grading policy.
FAQs
1) Which calculation mode should I use?
Use total-based when subjects have different maximum marks. Use mean-of-percentages only when every subject has the same total. Use weighted mode when credit hours should affect the final result.
2) Why does my average change when I switch modes?
Modes summarize data differently. Total-based prioritizes larger assessments automatically, while mean-of-percentages treats each subject equally. Weighted mode follows credits, so higher-credit subjects influence the outcome more.
3) Can obtained marks be higher than total marks?
Normally no. If you enter obtained above total, the row is flagged so you can correct it. The calculator still computes the percentage for transparency, but you should verify your inputs.
4) How do I set grade bands for my school?
Edit the minimum percentages for A, B, C, D, and F to match your handbook. The calculator assigns the overall grade based on the first band whose minimum is met.
5) Does the CSV include individual subjects?
Yes. The CSV export includes each subject’s obtained marks, total marks, weight, and percentage, plus a final summary line containing your overall percentage and grade.
6) How is the PDF generated?
The PDF is created in your browser from the computed table and summary. If a chart is visible, it is captured as an image and added to the PDF for printing or sharing.