Calculateur de Weighted Average
Calculate weighted average from three values and weights.
Formula and method
This calculator computes Weighted average directly in your browser without sending data to an external server.
Mathematical formula
- Weighted average:
(v1 × w1+v2 × w2+v3 × w3) ÷ (w1+w2+w3)
Variables and parameters
- Value 1 (v1): default value 80.
- Weight 1 (w1): default value 0.2.
- Value 2 (v2): default value 90.
- Weight 2 (w2): default value 0.3.
- Value 3 (v3): default value 95.
- Weight 3 (w3): default value 0.5.
Some formulas are undefined for certain input combinations (such as division by zero or logarithms of non-positive numbers). In those cases the live tool displays an alert instead of NaN.
Embed this tool
Paste this snippet into your own site or blog post to embed a live, working copy of this tool. It links back to the full page on SpecWhale.
Frequently asked questions
What equation and variables does Weighted Average Calculator use?
Weighted Average Calculator evaluates outputs such as <strong>Weighted average</strong> based on inputs including Value 1, Weight 1, Value 2, Weight 2, Value 3, Weight 3. Check the Mathematical Method section for the explicit formula.
What happens if I enter invalid or zero values into Weighted Average Calculator?
If an input combination is mathematically undefined (such as division by zero or negative square roots), SpecWhale alerts you gracefully rather than returning invalid NaN outputs.
Are my calculations in Weighted Average Calculator saved or private?
All calculations are 100% private and run locally in your Web browser. Your numbers are never uploaded to any server, but can be saved locally to your device or exported as CSV/JSON.
Is Weighted Average Calculator free to use?
Yes. Weighted Average Calculator is completely free, has no usage limit, and does not require an account, email, or API key.
Does Weighted Average Calculator store or upload my data?
No. Weighted Average Calculator calculates everything locally in your browser. Nothing you type is sent to a server or stored by SpecWhale.
How accurate is Weighted Average Calculator?
Weighted Average Calculator uses a standard formula (see the Method section above for the exact expression). For high-stakes financial, medical, or legal decisions, confirm the result with a professional or an authoritative source before relying on it.
Can I embed Weighted Average Calculator on my own website?
Yes. Use the "Embed this tool" snippet on this page to add a free, working copy of Weighted Average Calculator to your own blog post or page.