Article updated on April 17, 2018

The ISBLANK function returns TRUE if the argument is an empty cell, returns FALSE if not.

Excel Function Syntax

ISBLANK(value)

Arguments

value Required. The cell you want to check if empty.

Comments

The ISBLANK function returns FALSE if a formula returns nothing, see picture above in cell B4 and B7.

To check if a formula returns nothing use the following formula:

=IF(B3="",TRUE,FALSE)

This returns TRUE if a formula returns nothing "".