How does the Beta Calculator work?

Calculate historical returns vs. market index Then: Compute covariance of returns Then: Divide by market variance.

Can you give an example of how to use the Beta Calculator?

Example: Input Tech stock β = 1.5 gives a result of 50% more volatile than market (Higher risk/reward potential).

Is the Beta Calculator free to use?

Yes — completely free with no registration, download, or subscription required. All calculations happen instantly in your browser.

How accurate is the Beta Calculator?

Our Beta Calculator uses verified mathematical formulas and is accurate to multiple decimal places. Results are calculated in real-time using the same methods used by professionals.

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Beta Calculator

Portfolio Beta Calculation

Covariance(Stock, Market)

Market Variance

Beta measures security volatility relative to market: β > 1 more volatile than market, β < 1 less volatile, β = 1 matches market.

Difficulty:advanced

References

›Beta — Wikipedia

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Beta Calculator

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