This calculator works out your overall class grade from individual assignments. Enter the points you earned and the points possible for each item, and it returns your overall percentage and letter grade instantly — useful for tracking where you stand mid-term without a spreadsheet.
How it works
The calculator sums the points earned across every row and divides by the sum of points possible, giving an overall percentage:
overall % = (total points earned ÷ total points possible) × 100
That percentage is then mapped to a letter grade on the common US scale: A (90+), B (80-89), C (70-79), D (60-69), F (below 60). Because it works on raw points, a heavier assignment automatically carries more weight — a 200-point final counts ten times as much as a 20-point quiz, with no manual weighting.
Example
| Assignment | Earned | Possible |
|---|---|---|
| Quiz 1 | 18 | 20 |
| Homework | 45 | 50 |
| Midterm | 78 | 100 |
| Final | 165 | 200 |
Totals: 306 earned ÷ 370 possible = 82.7%, which is a B. The 200-point final dominates the result, exactly as it should.
When to use points-based vs weighted grading
Many professors build courses around a flat point system: every quiz, assignment, and exam is just worth a number of points, and your grade is your share of the total. This tool is made for exactly that structure.
A weighted grade calculator is different. Use it when your syllabus says things like “homework = 20% of your grade, midterms = 35%, final = 45%” regardless of how many points each assessment is actually out of. If you have that kind of syllabus, the weights do not follow from the raw points — you need to enter the percentages directly.
When in doubt, check your syllabus. If it specifies category percentages, use a weighted calculator. If every assignment has a point value and you simply accumulate them, this tool is the right one.
Tracking mid-semester progress
Students often use this tool mid-semester to project where they stand. A useful approach: enter all completed assignments with their actual scores, then add the remaining items with hypothetical scores — for example, your goal score on the final — to see what overall grade those outcomes would produce. Because every number updates live, you can quickly answer “what do I need on the final to secure a B?” by adjusting the final row until the letter grade flips.
Common mistakes
A frequent entry error is confusing points lost with points earned. If you scored 78 out of 100, enter 78 (not the 22 lost). Also make sure the “possible” column reflects the full point value of each assignment, not what remained after deductions. Entering partial scores correctly gives you a reliable view of where you stand.
Everything runs in your browser, so your grades never leave your device.