About

Weighted average

Calculate an average from value-and-weight pairs.

Input

Runs on your device

Result

Your result will appear here

How to use weighted average

Set Value, weight (one pair per line). Select Calculate, then review the result. Use the download or copy controls to keep it. Reset restores the starting settings and clears the result.

Weights can be percentages or relative quantities. They must be nonnegative and their total must be greater than zero.

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Inputs are processed in your browser and are not uploaded to an Everytool server. Results last until you reset or leave this page. Favorites and recently used tool names are saved only in this browser.