Weighted Grade Calculator: Course Grade from Categories
Enter each category's score and weight, such as homework, quizzes and exams, to get your weighted course grade and its letter grade. Shows what share of the course the weights cover.
Enter a score and a weight for each category, such as homework 92% weighted 20.
Need your grade point average instead? Use the GPA Calculator.
About the Weighted Grade Calculator
The Weighted Grade Calculator works out your course grade when different kinds of work count for different amounts. Most syllabuses split the grade into categories, such as homework 20%, quizzes 30% and the midterm 50%. Type each category's name, your score in percent and its weight, and the calculator shows your weighted grade and its letter grade. Add up to 20 categories with Add category, and remove any you do not need. Rows left completely empty are ignored.
If the weights you enter do not add up to 100, for example because the final has not happened yet, the calculator divides by the weights you entered and says what share of the course the grade covers. To see what you need on the final to reach a target, switch to Score needed on the final or open the Final Grade Calculator.
How to use it
Steps
- For each category, type a name (optional), the score (%) and the weight.
- Read the Weighted grade and the Letter grade below.
- Use Add category for more rows, and the cross button to remove one.
Scores can go up to 150% for extra credit. Weights must be 0 or more, and at least one must be above 0.
The formula
Each score is multiplied by its weight , the products are added, and the total is divided by the sum of the weights:
Worked examples
- Homework 92% weighted 20, quizzes 85% weighted 30, midterm 78% weighted 50. , and , a B−.
- Homework 90% weighted 20 and midterm 80% weighted 30. , and , a B, covering 50% of the course so far.
Letter grades
Letters use the common plus and minus scale: A from 93, A− from 90, B+ from 87, B from 83, B− from 80, C+ from 77, C from 73, C− from 70, D+ from 67, D from 63, D− from 60, and F below 60. Schools differ, so check your own scale; some start an A at 90 and leave out the plus and minus grades altogether. To turn letter grades into a grade point average across courses, use the GPA Calculator.
Privacy
Nothing is uploaded; every calculation runs in your browser and never leaves your device. The grades you type stay on this page and are gone when you close or reload it.
Frequently asked questions
How is a weighted grade calculated?
Multiply each category's score by its weight, add the results, and divide by the total weight. Homework 92% × 20, quizzes 85% × 30 and the midterm 78% × 50 give 8,290, and 8,290 / 100 = 82.9%.
What if my weights do not add up to 100?
The calculator divides by the weights you entered, so the result is your grade on the work graded so far. With homework 90% × 20 and a midterm 80% × 30, the grade is 84% over 50% of the course.
Which letter grade scale does it use?
The common plus and minus scale: A from 93, A− from 90, B+ from 87, B from 83, B− from 80, and so on down to D− from 60, with F below 60. Your school's scale may differ.
Can a score be above 100%?
Yes, up to 150%, so that extra credit counts. Weights can be any number of 0 or more, but at least one category needs a weight above 0.
How many categories can I add?
Up to 20. Rows left completely empty are ignored, while a row with a score but no weight, or a weight but no score, is flagged so you can fix it.