ISLOGICAL

Using the Excel ISLOGICAL Function

Summary

The Excel ISLOGICAL function will return TRUE when a cell contains the logical values TRUE or FALSE. The function returns FALSE for all cells containing other values, including empty cells.

Syntax

=ISLOGICAL (Value)

Syntax Breakdown

Value
Required. A value that will be tested as logical (either TRUE or FALSE). Typically supplied as a cell address.


Usage Notes

ISLOGICAL checks if a cell contains either logical value TRUE or FALSE. The function returns TRUE if a logical value is found and FALSE in all other cases.

The ISLOGICAL function does not evaluate 1 and 0 (zero) as TRUE and FALSE.