Enter each category score with its weight from your syllabus (weights should add up to 100%).
| Input | Result |
|---|---|
| HW 92/20%, Quiz 85/15%, Midterm 78/25%, Final 90/40% | 86.65% (B) |
| HW 100/30%, Final 80/70% | 86.00% (B) |
| Test 70/50%, Test 90/50% | 80.00% (B) |
The weights are almost always printed in the grading section of the syllabus, near the top, in a short table or bullet list. They add up to 100% across all graded work for the term. Copy them exactly, do not round 12.5% to 13%, and do not merge two categories that your teacher keeps separate.
| Typical structure | Homework | Quizzes | Midterm | Final |
|---|---|---|---|---|
| Exam-heavy university course | 10% | 10% | 30% | 50% |
| Balanced high-school course | 20% | 15% | 25% | 40% |
| Continuous-assessment course | 30% | 25% | 20% | 25% |
| Project-based course | 20% | — | 40% (projects) | 40% |
These are illustrative structures, not a rule. Your own syllabus is the only authority, a course that weights the final at 50% behaves very differently from one that caps it at 25%.
The same score has different consequences depending on where it lands. Consider a student sitting at 92% on homework and 68% on the midterm:
| Category | Score | Weight | Contribution |
|---|---|---|---|
| Homework | 92% | 20% | 18.40 |
| Quizzes | 85% | 15% | 12.75 |
| Midterm | 68% | 25% | 17.00 |
| Final (not yet taken) | — | 40% | — |
The categories already completed contribute 48.15 of the 60 available points. That leaves 40 points on the table, which is why the final alone decides the outcome: scraping 70% on it produces an 76.15% overall (C), while a 90% produces an 84.15% (B). Notice how little the homework, the category the student is best at, contributes to the final number, and how much the midterm's 68% costs. When weights are this uneven, effort should follow the weight, not the comfort of the subject.
| Situation | What to do |
|---|---|
| A category has several scores and its own weight | Average the category's scores first, then enter that average with its weight, or list them separately if your teacher weights each one |
| Weights add to less than 100% | The calculator averages over the weights you entered and shows the total it used, so partial terms still work |
| A dropped lowest score | Remove the lowest score from that category and recalculate the category average before entering it |
| Weights add to more than 100% | Check the syllabus again, usually two categories have been double-counted, or the final replaces a midterm rather than adding to it |
| Extra credit | Enter it as an additional category with its weight, or add the points to the category it applies to before averaging |
Almost every school publishes a rounding rule, and it decides whether an 89.4% becomes a B+ or an A−. The two policies you will meet:
| Policy | What happens to 89.4% | What happens to 89.5% |
|---|---|---|
| Round half up (most common) | 89% → B | 90% → A |
| Truncate / always round down | 89% → B | 89% → B |
| Round to nearest whole, no half-up | 89% → B | 90% → A only if the school treats .5 as up |
If your score lands on a boundary, check your syllabus before assuming anything, a single point at 89.4% versus 89.5% is the most common grade dispute in middle and high school.
If you have only the final left to take, the final grade calculator answers the more direct question: what score do I need? If your scores are not weighted at all, the plain grade calculator is simpler. And if you want to see the result as grade points rather than a percentage, the GPA calculator converts it.
The calculator averages over the weights you actually entered, so partial courses still work, it shows the weight total it used so you can check.
Your course syllabus lists them, usually near the grading section. If only the final weight is known, use the final grade calculator instead.