Weighted Average Calculator
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Weighted Average Calculator — free online calculator.
Formula
Weighted average = Σ(value × weight) ÷ Σ(weight)
- Weighted Average Calculator pairs each value with a weight, multiplies each pair, sums the products, and divides by the total weight.
- The main inputs are Values, Weights. Enter them in the units and format shown in the calculator.
- Keep comparable quantities in compatible units whenever the formula combines or compares them.
- Changing any input above recalculates the result with the same calculation engine used by this page.
Example: Weighted Average
Inputs
- Values: 80, 90, 70 comma separated
- Weights: 0.3, 0.5, 0.2 comma separated
Values 80, 90 and 70 with weights 0.3, 0.5 and 0.2 give (80×0.3 + 90×0.5 + 70×0.2) ÷ 1.0 = 83.
Sample result: Calculating…
Frequently asked questions
What does the Weighted Average calculate?
Weights may be counts, percentages, or other relative importance values when used consistently.
Which values should I enter?
Enter Values, Weights using the units and format shown beside each field.
What formula does this calculator use?
The calculator uses the following relationship: Weighted average = Σ(value × weight) ÷ Σ(weight).
Why might my result differ from another source?
Results can differ when another source uses different units, rounding rules, conventions or assumptions. Compare the inputs and definitions before comparing results.
Does the result update automatically?
Yes. Changing an input updates the result using the same calculation engine shown on this page.