Excel ISLOGICAL Function

This Excel Tutorial demonstrates how to use the Excel ISLOGICAL Function in Excel to test if a cell is a logical value, with formula examples.

ISLOGICAL Function Description:

The ISLOGICAL Function Test if cell is logical (TRUE or FALSE). Returns TRUE or FALSE.

Formula Examples:

islogical function examples

Example Formula Result
Logical – TRUE =ISLOGICAL(C5) True
Logical – FALSE =ISLOGICAL(C6) True
Number =ISLOGICAL(C7) False
Text =ISLOGICAL(C8) False

Syntax and Arguments:

The Syntax for the ISLOGICAL Formula is:

Function Arguments ( Inputs ):

value – The test value

Additional Notes

Use the ISLOGICAL Function to test if cell is logical (true or false). Simply enter the desired cell reference into the ISLOGICAL Formula. ISLOGICAL returns TRUE if blank, else FALSE.


You can also use the ISLOGICAL function in VBA. Type:
For the function arguments (value, etc.), you can either enter them directly into the function, or define variables to use instead.

Return to the List of all Functions in Excel

How to use the ISLOGICAL Function in Excel:

To use the AND Excel Worksheet Function, type the following into a cell:
After entering it in the cell, notice how the AND formula inputs appear below the cell:
islogical formula syntax
You will need to enter these inputs into the function. The function inputs are covered in more detail in the next section. However, if you ever need more help with the function, after typing “=ISLOGICAL(” into a cell, without leaving the cell, use the shortcut CTRL + A (A for Arguments) to open the “Insert Function Dialog Box” for detailed instructions:
how to use the islogical function in excel

For more information about the ISLOGICAL Formula visit the
Microsoft Website.

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