Weighted grade calculator
Add each category or assignment with its grade and weight to get your weighted course grade. The calculator flags weights that do not add up to 100% and can tell you what you need on the rest of the course.
Grades can be above 100% if extra credit applies.
How to calculate a weighted grade
Worked examples
| Grades | Weights | Calculation | Result |
|---|---|---|---|
| 92, 84, 95 | 25%, 30%, 45% | (92×25 + 84×30 + 95×45) ÷ 100 | 90.95% |
| Tests 85, Quizzes 80, Homework 95 | 40%, 40%, 20% | 85×0.40 + 80×0.40 + 95×0.20 = 34 + 32 + 19 | 85% |
| 90 on 60% of the course | 60% | 90 × 60 ÷ 60 (current average) | 90% |
If tests are worth 40%, multiply your test average by 0.40, do the same for every other category and add the results.
How to use the calculator
- Copy your categories. Add the categories or assignments from your syllabus or LMS grade settings.
- Enter grades and weights. Use each current average and the percentage that component contributes to the course.
- Check and plan. Confirm the weights total 100%. If you enter a target grade, the tool shows the average you need on the remaining weight.
What if the weights do not total 100%?
Categories or assignments? Use category averages when your LMS already combines homework, tests and labs, or individual assignments when each has its own weight. Do not enter both a category average and the assignments inside it, or that work is counted twice.
FAQ
How do I calculate my grade if tests are worth 40%?
Multiply your test average by 0.40 and each other category by its weight, then add the results. With tests at 85 (40%), quizzes at 80 (40%) and homework at 95 (20%): 85 × 0.40 + 80 × 0.40 + 95 × 0.20 = 85%.
How do I calculate a weighted grade?
Multiply each grade by its percentage weight, add the products and divide by the total weight entered. For a complete course whose weights total 100%, that is the weighted course grade.
Should grade weights add up to 100%?
Yes for a complete course. If you enter only graded categories, the calculator divides by the weight entered and shows how much of the course it represents.
Can I find out what I need on the final?
Yes. Enter the categories you have, leave the final out, and type a target grade. The tool shows the average you need on the remaining weight.
Which letter-grade scale does it use?
A plus and minus scale: A+ 97, A 93, A- 90, B+ 87, B 83, B- 80, C+ 77, C 73, C- 70, D+ 67, D 63, D- 60, F below 60. Your school may differ, so check the percentage too.
Can grades be above 100%?
Yes. Enter the grade as it is, for example 104 with extra credit.
Does this calculator save my grades?
No. The calculation runs in your browser and nothing you enter is sent or stored.
Does it use AI?
No. It is exact arithmetic, so the same inputs always give the same result.