Weighted grade calculator
Enter each category’s score and weight to see your current grade and what you need to reach a target.
Leave a score blank for work that hasn’t been graded yet. The tool will tell you what average you need on it.
How weighted grades work
Your syllabus splits the course into categories such as homework, quizzes, a midterm, and a final, each worth a percentage of the total. Your course grade is the sum of each category’s score multiplied by its weight. A 90% in a category worth 20% adds 18 points to your grade.
Current grade versus final grade
The current grade shown here only counts work that has been graded, scaled up so the weights you have completed add to 100%. It tells you where you stand today, not where you will finish.
What do I need on the rest?
Set a target and leave the scores blank for anything still to come. The tool works out the average you would need across the remaining weight. If it is above 100%, that target is out of reach without extra credit.
Tips
If a category has several assignments, enter your average for that category. Some professors drop the lowest score or curve the final grade, which this calculator does not model, so check your syllabus.
Worked example
A course weights homework at 20%, exams at 50% and labs at 30%. With averages of 95, 78 and 88, the course grade is 0.20 × 95 + 0.50 × 78 + 0.30 × 88 = 19 + 39 + 26.4 = 84.4%.
Notice how the exams pull the grade down: a 78 in the heaviest category matters more than a 95 in the lightest.
Frequently asked questions
What if my weights don’t add up to 100%?
That usually means some categories haven’t been graded yet. Leave the score blank for those, and the calculator works out your current grade from the graded categories only (dividing by their total weight) and shows what you need on the rest.
Is a weighted average the same as averaging my scores?
Only if every category has the same weight. Otherwise, heavier categories count more, which is why one bad exam can hurt more than several missed homework assignments.
How do I handle points-based grades?
If your syllabus uses total points instead of percentages, your grade is simply points earned ÷ points possible. Weighting isn’t needed.
Where do I find the weights?
They’re in your syllabus, usually in a grading section with a table of categories and percentages.