Weighted Grade Calculator
Enter each category's score and its weight to calculate your overall weighted course grade.
A weighted grade combines category scores according to how much each is worth. Multiply each category's score by its weight, add those products, and divide by the total weight. Homework 90% at weight 20, tests 85% at weight 30, and a final 95% at weight 50 give (1800 + 2550 + 4750) ÷ 100 = 91% overall.
How to Use This Calculator
Enter one grade category per line, writing the category's score first and then its weight, separated by a space or comma — for example '90 20' for a 90% score worth 20% of the course. List every category: homework, quizzes, tests, participation, projects and the final. The calculator returns your overall weighted course grade.
The weights do not have to add up to 100 — the calculator divides by whatever the weights total, so relative weights work fine. That also lets you compute your standing partway through a course by entering only the categories completed so far.
How the Calculation Works
A weighted average multiplies each score by its weight, sums those products, and divides by the sum of the weights. Categories with larger weights pull the overall grade toward their scores more strongly. If your weights already total 100, dividing by 100 turns the products directly into percentage points; if they total something else, dividing by the actual total correctly normalizes them, which is why the weights need not sum to exactly 100.
Worked Example
Suppose homework averages 90% and is worth 20% of the grade, tests average 85% and are worth 30%, and the final is 95% and worth 50%. Products: 90 × 20 = 1800, 85 × 30 = 2550, 95 × 50 = 4750. Sum of products = 9100; sum of weights = 20 + 30 + 50 = 100. Overall = 9100 ÷ 100 = 91%. The heavily weighted final (50%) pulls the total up toward its 95%, even though the tests were weaker.
What the Result Means
The overall figure is your course grade given the current category scores and their weights. Because it is weighted, improving a high-weight category (like a final or major project) moves your grade far more than the same improvement in a low-weight one — a useful guide for where to focus effort. Entering only completed categories shows your standing so far; adding remaining categories with expected scores lets you forecast your final grade under different scenarios.
Assumptions and Limitations
This computes a straightforward weighted average and assumes each category's score already summarizes that category (for example, your average across all homework). It does not apply special rules some courses use, such as dropping the lowest quiz, minimum thresholds, or curves. If a category is itself made of unequally weighted parts, average that category separately first. The result is exact for the scores and weights you enter; confirm your syllabus's exact scheme for official grades.
When to Use a Weighted Grade Calculator
Students use this to combine category scores and their weights — homework, tests, the final — into an overall course grade. Run it to see your current standing, forecast a final grade, or decide where to focus effort. Enter each category's score and weight to get the total.
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Open calculator →Frequently Asked Questions
How do I calculate a weighted grade?
Multiply each category's score by its weight, add all the products, and divide by the total of the weights. Categories worth more influence the overall grade more.
Do the weights have to add up to 100?
No. The calculator divides by whatever the weights total, so relative weights work. This also lets you compute your grade partway through a course using only completed categories.
What is the difference between weighted and unweighted grades?
An unweighted grade treats every item equally. A weighted grade lets some categories (like a final or project) count for more, so their scores affect the total more than lightly weighted ones.
How can I tell where to focus to improve my grade?
Improve the highest-weighted categories still ahead of you. A few points on a 50%-weighted final change your grade far more than the same points on a 10%-weighted homework category.
Can I forecast my final course grade with this?
Yes. Enter your completed categories with real scores and the remaining ones with target scores. The overall figure shows the grade you would earn under that scenario.
What if my course drops the lowest quiz?
Average the quiz category yourself after dropping the lowest score, then enter that adjusted average with the quiz weight. The calculator does not apply drop rules automatically.
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