Use this free weighted grade calculator: enter each category’s grade and how much it counts. You get your weighted average and letter grade. Leave a grade blank for work that is still to come, and the calculator shows the average you need on it to reach each letter.
Note: the calculator has not started. If this message stays, JavaScript is switched off in your browser, or this website is blocking the calculator’s script. Site owners: see the install guide, “calculator does not respond”.
Enter at least one graded category and its weight to see your weighted grade.
| Grade | Minimum percent | Average needed on the remaining work |
|---|
| Category | Grade | Weight | Points toward the final grade |
|---|
A weighted grade is the sum of each category’s grade times its weight, divided by the total weight. In the example below, homework 90% (weight 20), quizzes 85% (weight 10) and a midterm 78% (weight 30) give (1,800 + 850 + 2,340) ÷ 60 = 83.17% so far, a B on the standard scale. The final, worth 40, is not graded yet. To finish with 80% overall it must come in at 75.25% or more. The weighted grade calculator above does this for you and shows what each letter needs.
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In a weighted course, categories such as homework, quizzes, tests and a final exam each count for a share of the grade. A category worth 40% moves your grade four times as much as one worth 10%. To find the result, multiply each category’s grade by its weight, add those up, and divide by the total weight.
Enter one row per category. Use the grade for that whole category, such as your homework average. If you only have individual scores, average them first with the grade average calculator. If your course simply adds up points with no weights, use the points-based grade calculator.
Enter a weight and leave the grade blank for any category you have not finished, such as a final exam. The weighted grade calculator then shows:
If the remaining work is one exam, the final grade calculator gives the same answer for a single target grade.
Weights are treated as shares of the total you enter. If they add up to 100, they are percentages. If they add up to something else, such as 90 because a category is missing, the calculator still works: it divides by the total weight you entered and tells you the total is not 100. Check your syllabus in that case, because a missing category changes the result.
Weighted grade = Sum of (grade × weight) ÷ Sum of weights
Average needed on the rest = (Target × Total weight − Sum of grade × weight so far) ÷ Weight not graded
The letter is the first grade on the scale, counting down from the top, whose minimum is at or below the result. A result exactly on a cutoff earns that grade. The full rules are on the grading methodology page.
Example 1: homework 90% (weight 20), quizzes 85% (weight 10), midterm 78% (weight 30), and a final worth 40 that is not graded yet.
| Question | Result | Standard | Plus/minus |
|---|---|---|---|
| Grade so far (4,990 ÷ 60) | 83.17% | B | B |
| Lowest possible final (0% on the final) | 49.9% | F | F |
| Highest possible final (100% on the final) | 89.9% | B | B+ |
| Needed on the final for 80% | 75.25% | B | B- |
| Needed on the final for 90% | 100.25% | Out of reach | |
To reach 80% overall you need 80 × 100 = 8,000 weighted points. You have 4,990, so the final must supply 3,010 over its weight of 40, which is 75.25%. For 90% the final would need 100.25%, so an A is just out of reach unless there is extra credit.
Example 2: tests 82% (weight 50), homework 95% (weight 30), project 88% (weight 20). The weighted grade is 41 + 28.5 + 17.6 = 87.1%, a B on the standard scale and a B+ on the plus/minus example. A plain average of the three grades would be 88.33%, which shows why the weights matter.
The standard and plus/minus scales are examples, not rules. If your syllabus uses different cutoffs, choose Custom and enter them, or build and print a chart with the grading scale calculator.
Weights and rounding differ by course, so check your syllabus first. For background, see Weighted arithmetic mean and Grading in education on Wikipedia.
Yes. It is free, needs no sign-up, and runs in your browser. Your grades are not sent anywhere or saved.
Enter its weight and leave the grade blank. It is counted as work still to come, not as zero.
Enter 0 as its grade. The calculator then counts it as graded.
No, but they normally do. If they do not, the calculator divides by the total you entered and shows a note, so you can check your syllabus.
Yes. Switch to “As points earned and possible”. Each category’s percentage is its points earned divided by its points possible.
The value was rounded for display only. A result like 89.5% is graded on the unrounded number, and the page tells you when this happens. If your teacher rounds first, turn on “Round before grading” in Settings.
No. Only your scale and display settings are saved on this device. For a class sheet that can keep scores in your browser, see the class grade calculator.
It is a quick, transparent calculation. Your instructor or school sets the official grade. See the disclaimer.