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Weighted Grade Calculator

Calculate a weighted course average from four category scores and weights.

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Weighted Grade Calculator

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How to use this weighted grade calculator

Enter the requested values above and select Calculate. The result updates immediately on the page, so you can change one value and compare different scenarios without leaving the calculator.

Formula and method

Weighted average = sum(score × weight) ÷ sum(weights).

Example

Four equally weighted scores of 90, 85, 80 and 95 produce an 87.5% weighted average.

What this calculator is useful for

Calculate a weighted course average from four category scores and weights. It is designed for quick estimates and everyday problem solving. When a calculation affects a contract, tax filing, medical decision or other high-stakes situation, verify the result with the appropriate professional or authoritative source.

Four weighted categories yield 88.5%

Categories at 90% × 20%, 80% × 30%, 95% × 40%, and 85% × 10% contribute 18 + 24 + 38 + 8.5 = 88.5 percentage points.

How to interpret the result

The weights in this example add to 100%. The calculator can normalize other weight totals, which may differ from your syllabus if a category is missing.

Important limitation

Do not enter ungraded categories as zeros unless your instructor actually counts them as zeros. Check the syllabus before choosing weights.

Continue with: Grade Calculator · Required Average Calculator

Frequently asked questions

What does the Weighted Grade Calculator calculate?

Calculate a weighted course average from four category scores and weights.

How does the calculation work?

Weighted average = sum(score × weight) ÷ sum(weights).

Is this calculator free?

Yes. ERICH Calculators is free to use and no account is required.

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Method, assumptions & corrections

See how formulas, sources and limitations are handled across ERICH Calculators.