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GAMMALN function in Google Sheets

Returns the the logarithm of a specified Gamma function, base e (Euler's number).

=GAMMALN(value)

GAMMALN syntax and parameters

One argument, one required.

  • valuenumberRequired

    The input to the Gamma function. The natural logarithm of Gamma (value) will be returned. value must be positive.

GAMMALN examples

Formulas you'll actually reuse.

  1. ln Γ(x) — for x = 6 this is ln(120), i.e. ln(5!):

    =GAMMALN(B2)

    Result4.7875

  2. A factorial via the gamma function — works for non-integers too:

    =EXP(GAMMALN(B2 + 1))

    Result120

GAMMALN in Excel

Same name — your formula ports as-is.

Try GAMMALN in the playground

Edit the example — nothing to install.

Preloaded with the GAMMALN formula from Example 1 — change anything and watch it respond.

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Related functions

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