✓ Free · Any number of categories
Weighted Grade Calculator
Combine tests, quizzes, homework and more by their weights to get the overall grade and letter grade in seconds.
Free · No sign-up · Works in your browser — scores never leave your device.
How to Use the Weighted Grade Calculator
- Add a row for each grading category from your syllabus (tests, quizzes, homework, projects…).
- Enter the grade for each category as a percentage and its weight.
- The weighted grade and letter grade update instantly. If your weights don’t add up to 100%, the calculator scales the result to the categories you’ve entered — handy mid-semester.
Weighted Grade Formula
Multiply each category grade by its weight, add those products together, then divide by the total weight.
Worked Example
| Category | Grade | Weight | Grade × weight |
|---|---|---|---|
| Tests | 86% | 40% | 34.4 |
| Quizzes | 91% | 20% | 18.2 |
| Homework | 95% | 25% | 23.75 |
| Participation | 100% | 15% | 15 |
| Total | 100% | 91.35% |
The weighted grade is 91.35%, an A. A simple average of the four categories would be 93% — weighting matters because tests count for more.
Weighted vs. Unweighted Average
An unweighted (simple) average treats every grade the same. A weighted average lets important work, like exams, count more than small assignments. Most teachers set category weights in their gradebook, and this calculator mirrors that setup exactly. For a plain average, use the average grade calculator; to find what a student needs on the final, use the final grade calculator.
Frequently Asked Questions
How do you calculate a weighted grade?
Multiply each category grade by its weight, add the results, and divide by the sum of the weights. For example, 86% × 40 + 91% × 20 + 95% × 25 + 100% × 15 = 9,135, divided by 100 = 91.35%.
What if my weights don’t add up to 100%?
The calculator divides by the total weight you entered, so you get your current grade based only on the categories graded so far.
Can I use points instead of percentages?
Convert each category to a percentage first (points earned ÷ points possible × 100), then enter it with the category weight.
How many categories can I add?
As many as you need. Tap “+ Add category” for each one.
Is my information saved?
Your categories are remembered only in your browser on this device. Nothing is uploaded.
What grading scale is used?
The standard A 90 / B 80 / C 70 / D 60 scale, or your own custom scale if you changed it in the Easy Grader.