Weighted Grade Calculator

Enter your grade in each category (homework, quizzes, exams, and so on) along with each category's weight from your syllabus. The calculator combines them into your overall course grade.

Enter a grade and weight for each category on your syllabus. Leave unused rows blank. Names are optional.

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How the weighted grade calculator works

Most syllabi split your grade into categories — something like homework 20%, quizzes 20%, exams 60%. Your overall grade isn't the plain average of those three numbers; it's a weighted average, where each category grade counts in proportion to its weight. A 95 in homework is nice, but with exams worth three times as much, a 78 on exams will dominate the result.

Enter each category's grade and its weight from the syllabus. If your weights don't total 100 — say, the final project hasn't been graded yet — the calculator warns you and computes the average over the weights you did enter, which is your true standing on the graded portion of the course.

The formula

Grade = Σ ( category grade × weight ) ÷ Σ weight

Each category grade is your percentage in that category, each weight is the category's share of the course grade, and Σ means "sum across all categories entered." When weights total exactly 100, the denominator is simply 100.

Worked example

Say your syllabus weights are Homework 20%, Quizzes 20%, Exams 60%, and your grades are 92%, 84%, and 78% respectively:

Grade = (92×20 + 84×20 + 78×60) ÷ (20 + 20 + 60) = (1,840 + 1,680 + 4,680) ÷ 100 = 82%

Even though your grades average 84.7 on paper, the heavy exam weight drags the real grade down to 82 — a B−. That gap is exactly why weighted grades surprise people.

The mid-semester trick: partial weights

You don't have to wait until everything is graded. If only homework (20%) and quizzes (20%) have grades so far — say 90 and 80 — enter just those two rows. The calculator computes (90×20 + 80×20) ÷ 40 = 85%: your standing on the graded 40% of the course. That's more honest than pretending the ungraded 60% is a zero or a hundred. It also tells you something actionable: the remaining 60% (your exams) will count one and a half times as much as everything you've done so far, so the course is still very much winnable — or losable.

Frequently asked questions

What is a weighted grade?

A weighted grade is a course grade where categories count differently — for example, exams worth 60% of your grade and homework only 20%. Each category grade is multiplied by its weight before averaging, so heavier categories pull the final number harder.

How do I find my category weights?

Check your class syllabus — the grading policy section usually lists something like "Homework 20%, Quizzes 20%, Exams 60%." If it isn't listed there, look in your school's online portal or ask your teacher directly.

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

The calculator still works: it divides by the total weight you entered instead of 100, and shows a warning so you know. This is actually useful mid-semester, when some categories haven't been graded yet.

How do I calculate my grade within a single category?

Divide the points you earned by the points possible in that category, then multiply by 100. If you scored 172 out of 200 homework points, your homework category grade is (172 ÷ 200) × 100 = 86%.

Why is my result different from my school's grade portal?

The most common culprits are drop-lowest policies (many teachers drop your worst quiz), assignments entered but not yet graded, extra credit, and rounding. If your portal shows a different number, check whether any of those rules apply to your class.

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