Beta & Volatility Calculator

Beta measures how much a stock moves relative to the market (beta >1 = more volatile, beta <1 = less volatile). This tool calculates beta, correlation, and annualized volatility from periodic return data you paste in.

Enter periodic returns as comma-separated percentages. Example monthly returns: 2.1, -1.3, 3.5, 0.8, -2.2. You need the same number of periods for stock and index.

Stock Returns (% per period) Index Returns (% per period — e.g. S&P 500) Periods Per Year (12=monthly, 52=weekly, 252=daily)

Beta

Stock Volatility (ann.)

Correlation