How to Calculate Your Weighted Grade (With Examples)

If your teacher says “homework is 20%, quizzes are 15%, the midterm is 25%…” then your class uses weighted grades. Each category counts for a different share of your final mark, so you can’t simply average all your scores.

Here is the quick version:

Weighted grade = (score₁ × weight₁ + score₂ × weight₂ + …) ÷ (total weight completed so far)

Let’s walk through it with real numbers.

Worked example

Say your syllabus looks like this, and you’ve done everything except the final exam:

Step 1: multiply each score by its weight.

• Homework: 92 × 0.20 = 18.40
• Quizzes: 85 × 0.15 = 12.75
• Midterm: 78 × 0.25 = 19.50
• Participation: 100 × 0.10 = 10.00

Step 2: add them up. 18.40 + 12.75 + 19.50 + 10.00 = 60.65

Step 3: divide by the weight you’ve completed. So far you’ve done 20 + 15 + 25 + 10 = 70% of the course. 60.65 ÷ 0.70 = 86.6%

So your current grade is about 86.6%, which is a B in most US grading scales.

Skip the arithmetic with our grade calculator. Add your categories and weights, and it does the rest.

The mistake almost everyone makes

The tempting shortcut is to average the four category scores: (92 + 85 + 78 + 100) ÷ 4 = 88.75.

That’s 2 points too high, because it treats participation (10%) as if it counted as much as the midterm (25%). Your strong participation score is lifting the result more than it should. Always use the weights.

What do I need on the final?

This is where weighted grades really help. The final is worth 30%, and you have 60.65 points “banked” from the other 70%.

Score needed on final = (target grade − points banked) ÷ final weight

• For a 90 (A−): (90 − 60.65) ÷ 0.30 = 97.8%. That’s tough, but possible.
• For an 85 (B): (85 − 60.65) ÷ 0.30 = 81.2%. Very doable.
• For an 80 (B−): (80 − 60.65) ÷ 0.30 = 64.5%. Comfortable.

Our final grade calculator runs this instantly. We also have a full guide on what you need on your final.

What if the weights don’t add up to 100?

Sometimes a syllabus uses points instead of percentages. For example: homework 200 points, quizzes 150, exams 400, project 250. Just turn the points into weights by dividing each one by the total (1,000 here). Homework becomes 20%, quizzes 15%, and so on. Then use the same method.

Dropped scores and extra credit

• Dropped lowest score: if your teacher drops your lowest quiz, remove it before you average the quiz category.
• Extra credit: check how it’s added. Sometimes it goes into a single category, and sometimes it’s added to your overall percentage. The difference can be a full letter grade.

Turning it into GPA

Once you know your percentage, you can convert it to a letter grade and then to grade points. Our guide to how to calculate GPA explains the scale, and the GPA calculator works out your term or cumulative GPA.

Quick checklist

1. Find the weights in your syllabus or course outline.
2. Average your scores within each category first.
3. Multiply each category average by its weight.
4. Add them up and divide by the total weight completed.
5. Use the remaining weight to plan your target for the final.

FAQs

Is a weighted grade the same as a weighted GPA? No. A weighted grade is your percentage in one class. A weighted GPA gives extra points for harder classes such as Honors or AP.

My online gradebook shows a different number. Why? Gradebooks sometimes count missing work as zero, or don’t include categories with no grades yet. Ask your teacher which version they will use.

Can I use this for university modules in the UK or Australia? Yes. Modules with coursework and exam weightings work the same way. Just use your institution’s grade boundaries.

Related: the Student Study Planner & GPA Tracker keeps your grades, deadlines and timetable in one Excel file.

Related guides

• What Do I Need on My Final? How to Calculate It (With Examples)
• How to Calculate Your Test Score Percentage (and What Grade It Is)
• What Percentage Is a B? Letter Grade to Percentage Chart

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