# ISLOGICAL

## Content

This function tests whether a value, an expression or the contents of a referenced cell is a logical (Boolean) value.

## Syntax

`ISLOGICAL(cellreference)`
`ISLOGICAL(value)`
`ISLOGICAL(expression)`

## Arguments

[Required] Specify a cell reference, a numeric or text value, or an expression for the argument.

## Remarks

This function returns FALSE if the value refers to an empty cell or no data.
Use this function to test the contents of a cell, a numeric or text value directly, or a function or expression.

## Examples

`ISLOGICAL(B7)`
`ISLOGICAL(R4C8)`
`ISLOGICAL(true)` gives a result TRUE
`ISLOGICAL(OR(B7,B8))` gives a result FALSE