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Excel ISLOGICAL Function

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If you want to follow along with this tutorial, please download the example spreadsheet.

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Description

The Excel ISLOGICAL function tests if a supplied value or expression returns a logical value (TRUE and FALSE). If so, it returns TRUE, otherwise, returns FALSE.

Syntax and arguments

Formula syntax

ISLOGICAL(value)

Arguments

  • Value: Required, the value that used to be tested. It can be a formula, a cell reference, a name, or other expressions.

Return Value

The ISLOGICAL function returns a logical value TRUE or FALSE.

Version

Excel 2003 and later versions

Usage and Examples

Example: Basic Usage

To check if the cells in range C4:C8 contain logical values, you can use the ISLOGICAL function as below:

Select a cell to place the checking result, and type the formula as this:

=ISLOGICAL(C4)

Press Enter key, and then drag the auto-fill handle down to get all results.
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Relative Functions:

  • Excel ISODD Function
    The ISODD function checks whether a value is an odd number. If the given value is an odd number, it returns TRUE. Otherwise, it returns FALSE.

  • Excel ISEER Function
    The ISERR function returns TRUE for any error type (except #N/A) and FALSE otherwise.

  • Excel ISEVEN Function
    The Excel ISEVEN function tests if a supplied number (or numeric expression) is even, if so, it returns TRUE, otherwise, it returns FALSE.

  • Excel ISREF Function
    The ISREF function checks whether a given value is a reference. If the given value is a reference, it returns TRUE. Otherwise, it returns FALSE.


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