Free Grade Calculator
Work out your current weighted class grade from assignment scores, item or category weights, with a letter grade on a scale you can edit.
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How to calculate your weighted class grade
List your assignments with their scores and weights to see your current grade in a class. Use per-assignment weights or category weights from your syllabus, and match the letter scale to your school.
- Choose Weight per assignment or Category weights to match your syllabus.
- Add a row for each assignment with its score and the maximum points.
- Enter each row's weight, or set up categories with their percentages and assign each row to one.
- Leave scores blank for work not graded yet.
- Read your current percentage and letter, and edit the letter scale if your school uses different cutoffs.
When to use a grade calculator
Most courses do not grade by simple averages. A syllabus might say homework is worth 20 percent, quizzes 10 percent, the midterm 30 percent and the final 40 percent. Working out where you stand by hand means converting each score to a percentage and weighting it correctly, which is easy to get wrong. A grade calculator does that for you and shows your current grade at any point in the term.
Students use it to check a grade portal, decide where to focus study time, or see how one low quiz really affects the course. Teachers and tutors can use it to explain a weighting scheme or check a gradebook entry.
Worked example: weights per assignment
Suppose your homework score is 45 out of 50 with a weight of 20, Quiz 1 is 18 out of 20 with a weight of 10, the midterm is 82 out of 100 with a weight of 30, and the final, worth 40, has not happened yet. Homework and the quiz are both 90 percent and the midterm is 82 percent. The weighted grade is (20 times 90 plus 10 times 90 plus 30 times 82) divided by 60, which is 86 percent. On the default plus and minus scale that is a B. The results show 60 of 100 weight graded so far.
Now try category mode with Homework 25 percent, Quizzes 25 percent and Exams 50 percent. Two homework scores of 9 out of 10 and 7 out of 10 pool to 16 out of 20, or 80 percent. A quiz of 16 out of 20 is also 80 percent, and a midterm of 78 out of 100 makes Exams 78 percent. The grade is 0.25 times 80 plus 0.25 times 80 plus 0.5 times 78, which equals 79 percent, a C plus.
How the grade is calculated
In per-assignment mode, each graded row becomes a percentage, score divided by maximum times 100. The grade is the sum of each weight times its percentage, divided by the sum of weights for graded rows. Blank scores are skipped.
In category mode, points are pooled inside each category: total points earned divided by total points possible. Each category average is then multiplied by its weight, and the result is divided by the total weight of categories that have at least one graded item. The letter grade is the highest letter whose minimum percentage your grade meets.
Common mistakes to avoid
A common mistake is mixing up the two weighting methods. If your teacher averages percentages within a category instead of pooling points, a short quiz and a long quiz count equally, and the result can differ from category mode here. In that case, use per-assignment mode and give each quiz its share of the category weight.
Another mistake is forgetting that a current grade only covers graded work. A strong grade with 60 percent of the weight graded can still change a lot after a heavy final. Your teacher's rounding and grading policy set the official grade, so treat this result as an estimate.
Useful tips and limitations
- Use category mode when your syllabus says things like Homework 25 percent, Exams 50 percent.
- Add the final exam as a row with a blank score so its weight is ready when you want to test outcomes.
- Enter scores above the maximum to include extra credit; the results flag them.
- Rename categories to match your syllabus exactly so rows are easy to assign.
Common questions
How does the grade calculator handle assignments that are not graded yet?
Rows with a blank score are left out. Your current grade is based only on graded work, and the results show how much of the total weight is graded so far.
Do weights have to add up to 100 in the grade calculator?
No. In per-assignment mode, weights can be percentages or points, and the grade divides by the total weight of graded rows. In category mode, a note appears if category weights do not total 100.
Can I change the letter grades in the grade calculator?
Yes. Open the letter scale editor to change any cutoff, add letters, or switch between a plus and minus scale and a simple A to F scale.
Does the grade calculator pool points or average percentages inside a category?
It pools points. A category's grade is total points earned divided by total points possible, so longer assignments count more within that category.
Can the grade calculator include extra credit?
Yes. Enter a score above the maximum points. The grade includes it and a note points out which rows contain extra credit.
How many assignments can I add to the grade calculator?
Up to 60 rows and 20 categories, which covers most courses.
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