totn Excel Functions

MS Excel: How to use the ISLOGICAL Function (WS)

This Excel tutorial explains how to use the Excel ISLOGICAL function with syntax and examples.

Description

The Microsoft Excel ISLOGICAL function can be used to check for a logical value (ie: TRUE or FALSE).

The ISLOGICAL function is a built-in function in Excel that is categorized as an Information Function. It can be used as a worksheet function (WS) in Excel. As a worksheet function, the ISLOGICAL function can be entered as part of a formula in a cell of a worksheet.

Syntax

The syntax for the ISLOGICAL function in Microsoft Excel is:

ISLOGICAL( value )

Parameters or Arguments

value
The value that you want to test. If value is a TRUE or FALSE value, this function will return TRUE. Otherwise, it will return FALSE.

Returns

The ISLOGICAL function returns TRUE if the value is a logical value such as TRUE or FALSE.
The ISLOGICAL function returns FALSE otherwise.

Applies To

  • Excel for Office 365, Excel 2019, Excel 2016, Excel 2013, Excel 2011 for Mac, Excel 2010, Excel 2007, Excel 2003, Excel XP, Excel 2000

Type of Function

  • Worksheet function (WS)

Example (as Worksheet Function)

Let's look at some Excel ISLOGICAL function examples and explore how to use the ISLOGICAL function as a worksheet function in Microsoft Excel:

Microsoft Excel

Based on the Excel spreadsheet above, the following ISLOGICAL examples would return:

=ISLOGICAL(A1)
Result: TRUE

=ISLOGICAL(A2)
Result: TRUE

=ISLOGICAL(A3)
Result: FALSE

=ISLOGICAL(A4)
Result: FALSE

=ISLOGICAL(TRUE)
Result: TRUE

=ISLOGICAL("TRUE")
Result: FALSE