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Weighted Grade Calculator

Turn your syllabus weights into one number. Enter each category — assignments, tests, projects, coursework, the final exam — with the score you earned and the percent of the course it is worth, and see your weighted class grade so far.

Who this calculator helps

  • Checking your class grade mid-semester before the final exam.
  • Testing what a strong project score would do to your overall grade.
  • Seeing how much of the course grade is still unearned.
  • Comparing two courses that weight coursework and exams differently.
  • Planning study time toward the categories that carry the most weight.

Weighted grade so far

83.00%

Roughly a B on a standard 90/80/70/60 scale

Points earned of the full course

83.00 of 100

Weights entered: 100%

All calculations are estimates based on average platform fees. Real profits may vary depending on category, ads, and shipping.

Your school or teacher may use a different grading scale. Use this as a planning estimate.

How to use this calculator

  1. Enter your numbers in each field above — the calculator updates instantly as you type, so there's nothing to submit.
  2. Use your real figures when you have them, or sensible estimates while you're planning. If a field doesn't apply, leave it at zero.
  3. Compare the results, then change one input at a time to see how each lever (price, cost, fees, volume) moves the outcome.

When to use this calculator

  • Your syllabus lists category weights rather than a simple average.
  • You have grades for some categories and want your grade so far.
  • You want to know whether a low test score is recoverable.
  • You are deciding how much effort a low-weight assignment deserves.

Formula

Category % = (Earned ÷ Possible) × 100 · Weighted grade = Σ(Category % × Weight) ÷ Σ(Weight)

Worked example

Assignments 88% (30%), tests 76% (30%), project 92% (15%), final 80% (25%).

  1. Weighted points: 88×0.30 = 26.4, 76×0.30 = 22.8, 92×0.15 = 13.8, 80×0.25 = 20.0
  2. Total weighted points: 26.4 + 22.8 + 13.8 + 20.0 = 83.0
  3. Total weight: 30 + 30 + 15 + 25 = 100
  4. 83.0 ÷ 100 × 100 = 83.0%

Answer: 83.00% — roughly a B

More worked examples

Only two categories graded so far: homework 95% (20%) and midterm 70% (25%).

  1. Weighted points: 95×0.20 = 19.0 and 70×0.25 = 17.5, total 36.5
  2. Weight entered: 45%
  3. 36.5 ÷ 45 × 100 = 81.1%

Answer: 81.11% on the 45% of the course graded so far

Weights add to 110% by mistake: 40% + 40% + 30%.

  1. The calculator flags the total as over 100%.
  2. It still divides by the weight entered so the percentage stays readable.

Answer: A warning that the syllabus weights need checking

How it works

A weighted grade multiplies each category percentage by its weight, adds those products together, and divides by the total weight entered. Dividing by the weight entered — rather than always by 100 — is what makes the result meaningful mid-semester, when part of the course has not been graded yet.

The second result shows the same figures as points earned out of the full 100-point course, which is useful for seeing how much grade is still up for grabs.

If your weights add up to less than 100%, the missing slice is course work still ahead of you. If they add to more than 100%, something in the syllabus has been read twice — the calculator flags both cases.

Your school or teacher may use a different grading scale. Use this as a planning estimate.

Expert tips

  • Copy the weights straight from the syllabus rather than guessing — a 10% mistake moves the grade noticeably.
  • Enter earned and possible points rather than a rounded percentage for each category to keep precision.
  • For a category with several scores, total the earned points and the possible points before entering them.
  • A low score in a 5% category barely matters; the same score in a 40% category is where to focus.
  • Use the Final Grade Calculator once you know your grade so far to find the exam score you need.

How to interpret your results

  • Dollar values are shown per sale, per order, or per item unless a result is explicitly labelled monthly, weekly, or daily.
  • Percentages (margin, ROI, conversion rate) are easier to compare across products and price points than raw dollars — use them when you benchmark.
  • A positive result means you're ahead after the costs and fees you entered. A negative result means the current numbers don't work — change a lever (raise price, cut a cost, lower ad spend) and recalculate.
  • Treat the output as a planning estimate, not a guarantee. Fees, taxes, and conversion rates shift over time — re-run the numbers whenever a key input changes.

Limitations

  • The letter grade shown uses a plain 90/80/70/60 scale, not your institution's scale.
  • Dropped-lowest-score rules, curves, extra credit, and rounding policies are not modelled.
  • It is a planning estimate, not an official grade record.

Common mistakes

  • Averaging category percentages without applying the weights.
  • Entering weights that add to more or less than 100% without noticing.
  • Using points possible of zero, which cannot produce a percentage.
  • Treating the letter grade as your school's official cutoff.

Related Guides

Go deeper with plain-English guides on the same topic.

FAQ

How do I calculate a weighted grade?
Multiply each category percentage by its weight, add the results, then divide by the total weight. Assignments at 88% with a 30% weight contribute 26.4 points.
What if my weights do not add up to 100%?
The calculator warns you and still divides by the weight you entered, so the figure reflects your grade on the graded portion of the course.
What if my weights add up to more than 100%?
You will see an over-100% warning — usually a category has been counted twice in the syllabus.
Is the letter grade official?
No. Your school or teacher may use a different grading scale. Use this as a planning estimate.
Can I enter a percentage instead of points?
Yes — enter the percentage as the score earned and leave possible at 100.
How many categories can I add?
Between three and six, which covers most syllabus layouts.
How is this different from the Final Grade Calculator?
This one tells you where you stand now. The Final Grade Calculator tells you what you need on the final to hit a target.
Does it handle dropped lowest scores?
No — leave the dropped score out of the earned and possible totals yourself.

Why trust this calculator?

This tool uses standard mathematical formulas and commonly accepted calculation methods, shown openly in the Formula section above so you can verify the math yourself. Results are estimates based on the information you enter and do not account for every individual circumstance. For important financial, tax, legal, medical, or business decisions, please double-check with a qualified professional before acting on the numbers.

Keep going

One calculator rarely tells the full story. Pair this one with a related tool below to pressure-test your numbers from a different angle, or browse Student Calculators for more in the same category.

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