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Weighted Grade Calculator

Built for syllabus-style grading. Give each category its weight (homework 20%, tests 40%…), list the scores in it, and see your weighted grade and what you need in the categories still to come.

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  • U.S. grading scale
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  1. %

    No scores yet. Leave empty if nothing is graded.

  2. %

    No scores yet. Leave empty if nothing is graded.

  3. %

    No scores yet. Leave empty if nothing is graded.

  4. %

    No scores yet. Leave empty if nothing is graded.

Weights add up to 100% ✓

Weighted grade

Add scores to at least one category.

How this weighted grade calculator works

  1. Each category's scores are averaged on their own.
  2. Each category average is multiplied by the category's weight.
  3. The results are added and divided by the total weight of categories that have scores.

Weighted grade = Σ(category average × weight) ÷ Σ(weights with scores)

Worked example

An English 10 grade mid-semester

Homework (20%): 100, 95, 88, 100, 72 → average 91%.

Quizzes (20%): 8/10, 9/10, 7/10 → average 80%.

Tests (40%): 84, 79 → average 81.5%.

Final (20%): not taken yet.

(91×20 + 80×20 + 81.5×40) ÷ 80 = (1,820 + 1,600 + 3,260) ÷ 80 = 83.5%, a B.

Because it applies each category's weight for you, it also works as a grade weight calculator: change a weight (say, tests from 40% to 50%) and see how much your grade moves.

How to calculate a weighted average

A weighted grade is one kind of weighted average. The same three steps work for any weighted average, whether the weights are percentages, credits or point values:

  1. Multiply each value by its weight.
  2. Add those products together.
  3. Divide by the sum of the weights.

Weighted average = Σ(value × weight) ÷ Σ(weights)

Worked example

Weights that aren't percentages

A project scored 80 (weight 2), a midterm 90 (weight 3) and a final 70 (weight 5).

(80×2 + 90×3 + 70×5) ÷ (2 + 3 + 5) = (160 + 270 + 350) ÷ 10 = 78. The simple average would be 80; the heavily weighted final pulls it down.

If the weights already add up to 100%, dividing by 100 just turns the result back into a percentage. GPA is a weighted average too, with credits as the weights; see how to calculate GPA. For a plain list of equally weighted scores, the average grade calculator is simpler.

Where to find your category weights

Look in your syllabus or course outline, often under "Grading" or "Assessment." In PowerSchool, Infinite Campus, Skyward and Canvas, weighted categories usually show a percentage next to the category name. If there are no percentages and every assignment just has a point value, your class uses total points, and the points mode of the grade calculator is the better fit.

Common category weights in U.S. classes

  • High school core class: classwork/homework 20–30%, quizzes 20–30%, tests/projects 40–60%, plus a 10–20% semester exam.
  • College lecture course: exams 50–70%, homework/labs 15–30%, participation 5–10%, final 20–35%.
  • AP course: often heavier on tests (50%+) to mirror the AP exam.

Your final exam is often its own category. When it's the only one left, the final grade calculator gives the exact score you need.

Frequently asked questions

How do weighted grades work?

Each category counts for a fixed percentage of your grade. You average the scores inside each category, multiply each average by its weight, add those up and divide by the total weight.

How do I calculate a grade with weights and missing assignments?

If an assignment is missing and your teacher counts it as a zero, enter 0 in that category. If it simply isn't graded yet, leave it out. A category with no scores at all is skipped and the remaining weights are rescaled, which is how most online gradebooks show a mid-semester grade.

Why does one category affect my grade so much?

Because weight, not the number of assignments, decides its impact. If tests are 50% and you've had only two, each test is worth about 25% of your current grade, far more than any single homework assignment.

What if my category weights don't add up to 100%?

The calculator divides by the weight you've entered, so the result is still correct for the categories that have scores. It also shows what you'd need in the categories without scores yet.

What's the difference between a weighted average and a regular average?

A regular (simple) average counts every number equally: add them and divide by how many there are. A weighted average multiplies each number by its weight first and divides by the total weight, so heavier items move the result more. Scores of 90 and 70 average 80, but if the 70 is weighted three times as much, the weighted average is (90 × 1 + 70 × 3) ÷ 4 = 75.

Is a weighted grade the same as a weighted GPA?

No. A weighted grade is one class's grade with category weights. A weighted GPA gives extra grade points for Honors and AP classes. For that, use the high school GPA calculator.

Last reviewed by the GradeCalc team. See how we calculate.