Weighted Average Calculator
Average where each value carries a different weight.
Weighted average
88.6
Σ(value × weight)
88.6
Σ weights
1
Plain mean
86.25
ShowHide the working
- 1Σ(value × weight) = 88.6
- 2÷ Σ weights (1) = 88.6
Formula
weighted mean = Σ(value × weight) ÷ Σ(weight)How it works
An average where some values count for more than others — used for grades, portfolios and survey results.
Example
Values 85, 90, 78, 92 at weights 0.2/0.3/0.1/0.4 give 88.6.
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About the Weighted Average Calculator
Average where each value carries a different weight. It sits in the Statistics section of NWS Calc, a free collection of calculators that run entirely in your browser. There is no signup, no paywall and no tracking — open the page, enter your numbers, get an answer.
Frequently asked questions
- Is the Weighted Average Calculator free to use?
- Yes. Every calculator on NWS Calc is completely free, with no signup, no usage limits and no ads.
- Does my data leave my device?
- No. The Weighted Average Calculator runs entirely in your browser using JavaScript. Nothing you type is uploaded, logged or stored on a server.
- Can I use the Weighted Average Calculator on my phone?
- Yes. The page is fully responsive and works in any modern mobile or desktop browser — there is nothing to install.
- What else is in Statistics?
- Mean, deviation, regression, probability and distributions. You can browse the full Statistics category for related calculators.