The ISBLANK function is one of the information functions. It is used to check if the cell is empty or not. If the cell does not contain any value, the function returns TRUE, otherwise the function returns FALSE.
Syntax
ISBLANK(value)
The ISBLANK function has the following argument:
Argument
Description
value
The value that you want to test. The value can be an empty cell, error, logical value, text, number, reference value, or a name referring to any of these.