The result reports the weighted mean and makes every contribution available in the breakdown.
Math calculator
Average and Weighted Average Calculator
Paste a comma-separated list of values and optionally add one matching weight for each value.
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No account. Formula and assumptions are shown below.
Calculator inputs
Average details
Formula & disclaimer
Average = ΣValues ÷ Count; Weighted Average = Σ(Value × Weight) ÷ ΣWeights
View assumptionsFormula reviewCalcs at Hand Editorial TeamVerified 28 August 2026 · automated checks included
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Result—
Projection
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Formula & details
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How to read this result
Three useful checks, kept deliberately short.
Values 78, 84, 91 and 87 with weights 20, 30, 25 and 25: Multiply every value by its weight · Add the weighted contributions · Divide by the total weight.
Weights may be percentages, credits or any consistent non-negative scale.
Formula and assumptions
Average = ΣValues ÷ Count; Weighted Average = Σ(Value × Weight) ÷ ΣWeightsWithout weights, every value contributes equally. With weights, larger weights have more influence on the result.
Keep in mind: Use values and weights from the same scale and context.
Produced byCalcs at Hand Editorial Team
Last formula check28 August 2026
Review methodKnown examples + boundary cases
Editorial and correction policy →