## Excel ISLOGICAL Function

### 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.

#### 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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