How is a weighted grade calculated?

Each component's score is multiplied by its weight, the results are summed, and the total is divided by the sum of the weights. Components with a larger weight count more toward the final grade.

What if my weights do not add up to 100%?

The calculator still works — it normalises by the total weight you entered — and shows a note so you can check whether a category is missing. If the weights should total 100%, the note flags when they do not.

Can I calculate my grade before the final exam?

Yes. Enter only the components you have so far. The result is your current weighted standing across those categories; the note will warn that the weights do not total 100% so you know it is partial.

Should I enter scores as percentages or points?

Enter each score as a percentage (0 to 100). The weight is the share that component contributes to the final grade, also as a percentage, such as 20 for homework.

What is the difference between this and a plain grade calculator?

A plain grade calculator averages all scores equally. This weighted version lets each category carry a different share of the final grade, which is how most syllabuses actually work.

How many components can I add?

As many as your course has. Add a row for homework, quizzes, labs, the midterm, the final, and anything else, and the weighted grade recalculates instantly.

Is anything uploaded?

No. All calculations run locally in your browser. Nothing is sent to or stored on any server.

Weighted Grade Calculator

Weighted grade calculator

Most courses weight categories differently — homework might be worth 20%, the midterm 30%, and the final 50%. This weighted grade calculator combines each component’s score and weight into a single final grade, so you can see exactly where you stand or predict your result before the final exam.

How it works

Enter each component’s score (as a percentage) and its weight (the share it contributes to the final grade). The tool multiplies each score by its weight, sums those products, and divides by the total weight:

weighted grade = Σ(score × weight) ÷ Σ(weight)

Because it divides by the total weight rather than assuming 100, it still gives a sensible answer when your weights do not add up to 100% — useful mid-semester. It also displays the running total weight and flags when it is not exactly 100%, so you can spot a missing category.

Example

Component	Score	Weight
Homework	92	20
Midterm	78	30
Final	85	50

Weighted sum = (92×20) + (78×30) + (85×50) = 1840 + 2340 + 4250 = 8430. Total weight = 100. So the weighted grade is 8430 ÷ 100 = 84.3%.

Everything runs in your browser — your grades never leave your device.