# ISBLANK

## Content

This function tests whether a value, an expression or contents of a referenced cell is empty.

## Syntax

`ISBLANK(cellreference)`

`ISBLANK(value)`

`ISBLANK(expression)`

## Arguments

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

## Remarks

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

> **Note:**  Function implementation generally tries to follow the behavior found in popular spreadsheet applications; however, not all these applications agree whether the empty string "" should be treated the same as an empty cell.
> 
> In GC.Spread, both the [COUNTBLANK](/spreadjs/docs/v16/formulareference/FormulaFunctions/statistical-functions/COUNTBLANK) and ISBLANK functions consistently treat the empty string "" differently than an empty cell.

## Data Types

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

## Examples

`ISBLANK(B1)`

`ISBLANK(A4)`

`ISBLANK(A4-52)`

`ISBLANK(4)` gives the result FALSE