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Weighted Average Calculator

Weighted mean of paired value/weight lists.

Compute a weighted average from two equal-length lists of values and weights — useful for grades, weighted survey scores, or blended portfolio returns.

Daniel Oh By Daniel Oh
Published Last reviewed 1 min read

Inputs

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

x̄ = Σ(xᵢ · wᵢ) / Σwᵢ

In depth

Compute a weighted average from two equal-length lists of values and weights — useful for grades, weighted survey scores, or blended portfolio returns.