# ISLOGICAL

Spread for WinForms provides advanced software components that support Excel import/export, full cell customization, an extensive calculation engine with over 450 functions and more, all with zero dependencies on Excel.

## Content



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

## Syntax

ISLOGICAL(*cellreference*)
ISLOGICAL(*value*)
ISLOGICAL(*expression*)

## Arguments

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 to no data.
Use this function to test the contents of a cell, a numeric or text value directly, or a function or expression.

## Data Types

Accepts any data type for an argument. Returns Boolean (TRUE or FALSE) data.

## Examples

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

## Version Available

This function is available in product version 1.0 or later.

## See Also

[ISNONTEXT](/spreadnet/docs/latest/online-formula/formulas-functionsall/formulas-functsFtoK/FunctionISNONTEXT) \| [ISNUMBER](/spreadnet/docs/latest/online-formula/formulas-functionsall/formulas-functsFtoK/FunctionISNUMBER) \| [ISTEXT](/spreadnet/docs/latest/online-formula/formulas-functionsall/formulas-functsFtoK/FunctionISTEXT) \| [Information Functions](/spreadnet/docs/latest/online-formula/formulas-overview/formulas-functs/formulas-functtypes/formulas-functsinfo)