Online Tool Store
Weighted Grade Calculator
Calculate your overall course grade from custom weighted categories like homework, exams, and participation, with a warning if weights don't total 100%. Runs entirely in your browser.
🔒 This tool runs entirely in your browser. Your files are never uploaded to a server.
| Category | Weight (%) | Score (%) | |
|---|---|---|---|
Final grade
Total weight used
How the weighted grade calculator works
- List each grade category from your syllabus with its weight percentage and your score.
- The calculator multiplies each score by its weight and sums the results.
- Dividing by the total weight gives your overall course grade.
The formula
final grade = Σ(weight × score) / Σ(weight)
FAQ
What happens if my weights don't add up to 100%?
The calculator still works - it normalizes by dividing the weighted sum by your total weight instead of assuming 100%, and shows a note so you know your weights don't match the syllabus total.
Can I add or remove grade categories?
Yes. Use "Add category" to add a new row, or "Remove" on any row to delete it - the final grade recalculates instantly either way.
How is the final grade calculated?
Each category's score is multiplied by its weight, those products are summed, and the total is divided by the sum of all weights - the standard weighted-average method most syllabi describe.
Is my grade data saved anywhere?
No. Everything is calculated locally in your browser and resets when you reload the page.
How we compare
| Feature | Online Tool Store | Spreadsheet formula | School LMS gradebook |
|---|---|---|---|
| No formula writing required | ✓ | ✗ | ✓ |
| No account or login | ✓ | ✓ | ✗ |
| Warns if weights don't total 100% | ✓ | ✗ | Varies |
For a quick "what grade do I need" check without logging into your school portal, Weighted Grade Calculator is faster.