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ISLOGICAL function in Google Sheets

Checks whether a value is `TRUE` or `FALSE`.

=ISLOGICAL(value)

ISLOGICAL syntax and parameters

One argument, one required.

  • valueanyRequired

    The value to be verified as a logical TRUE or FALSE. *ISLOGICAL returns TRUE if value is either TRUE or FALSE or a reference to a cell whose value is either TRUE or FALSE.

ISLOGICAL examples

Formulas you'll actually reuse.

  1. Is the approval cell a real TRUE/FALSE, not the text “TRUE”?

    =ISLOGICAL(E2)

    ResultTRUE

  2. Accept either a checkbox value or a typed yes/no in the same column:

    =IF(ISLOGICAL(E2), E2, E2 = "yes")

    ResultTRUE

ISLOGICAL in Excel

Same name — your formula ports as-is.

Try ISLOGICAL in the playground

Edit the example — nothing to install.

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

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