Using the Excel ISBLANK Function

Summary
The Excel ISBLANK function is one of Excel's IS functions. ISBLANK checks if a cell contains any data or if it is empty. If the cell is not empty, the function returns FALSE. If the cell is empty, the function returns TRUE.Syntax
=ISBLANK (value)Syntax Breakdown
ValueRequired. The value that is to be tested. This can be a cell or cell reference.