Greek Symbols

Beta Symbol

Β β

The beta symbol (Β / β) is a letter of the Greek alphabet. This page covers its meaning across mathematics, science, and engineering, its Unicode code point, TeX command, and Windows Alt codes — and you can copy and paste the beta symbol with one click.

Uppercase Beta Symbol (Β)

Β
SymbolFormatData
ΒUnicodeU+0392
ΒHTMLΒ
ΒCSS\0392
ΒJavaScript\u0392
B\BetaTeX\Beta
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Greek Capital Letter Beta (Β)ImageDownload ↓

Also known as: uppercase beta, big beta, beta capital, capital beta, greek capital b.

The capital Greek letter Beta (Β) looks the same as the Latin capital B, so it seldom carries an independent meaning in mathematics. It may appear as a label or variable where Greek capitals are enumerated alongside Latin ones. In practice the lowercase β is far more common.

B+β\Beta + \beta

Lowercase Beta Symbol (β)

β
SymbolFormatData
βUnicodeU+03B2
βHTMLβ
βCSS\03b2
βJavaScript\u03B2
β\betaTeX\beta
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Greek Small Letter Beta (β)ImageDownload ↓

Also known as: greek b, beta symbol, beta letter, second greek letter, regression coefficient, lowercase beta, greek beta, beta function symbol.

Beta (β) is the second letter of the Greek alphabet, widely used as a parameter or coefficient. In statistics it denotes regression coefficients or the probability of a type II error, and in mathematics it names the beta function and beta distribution. In physics it labels beta particles (fast electrons from radioactive decay) and the speed ratio v/c in relativity, while in finance β measures an asset's volatility relative to the market.

B(x,y)=∫01tx−1(1−t)y−1 dtB(x, y) = \int_0^1 t^{x-1}(1-t)^{y-1}\, dt

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β
Beta Symbol — Β Greek Capital Letter Beta, β Greek Small Letter Beta