How is a weighted course grade calculated?

Each category contributes its score times its weight. The weighted grade is the sum of (score * weight) divided by the sum of the weights you entered scores for. If all weights total 100% and all are scored, the result is simply sum(score * weight) / 100.

What if my category weights do not add up to 100%?

The tool flags the total so you can fix a typo. It also computes a grade over only the categories you have scored, so you can see your standing on completed work even when some weight remains unassigned.

Can I leave a category unscored?

Yes. Leave the score blank for a category you have not taken yet, like a final exam. The tool excludes it from the average and reports how much weight is still outstanding, so you know how much of your grade is undecided.

What is the difference between weighted and points-based grading?

Weighted grading assigns each category a fixed percentage of the final grade regardless of how many points it contains. Points-based grading sums raw points across everything. This calculator is for the weighted scheme described in most syllabi.

No. All calculation happens in your browser and nothing is sent or stored.

Assignment & Quiz Grade Weight Calculator

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Weighted course grade calculation

Most syllabi split your grade into weighted categories: homework might be 20%, quizzes 15%, two midterms 30%, a final 25%, and participation 10%. This calculator combines your score in each category by its weight to project your overall course grade, and warns you if your weights do not add up to 100%.

How it works

Each category contributes its percentage score multiplied by its weight. The weighted grade over the categories you have scored is:

grade = sum(score_i * weight_i) / sum(weight_i)

where the sum runs only over categories that have a score entered. For example, with homework 20% at 95, quizzes 15% at 88, and a midterm 25% at 76:

grade = (95*20 + 88*15 + 76*25) / (20 + 15 + 25)
      = (1900 + 1320 + 1900) / 60
      = 5120 / 60
      = 85.3

That 85.3 is your grade on the 60% of the course completed so far. The remaining 40% (final and participation) is still outstanding until you enter those scores.

Tips and notes

Enter weights as the percentages from your syllabus; they should normally total 100%.
Leave the score blank for anything you have not completed, and the tool excludes it and reports the unscored weight.
If your course drops your lowest quiz or curves a category, adjust the score you enter to reflect that.