The ISERROR & ISBLANK Functions: Your Data Cleanup Duo in Excel The ISERROR & ISBLANK Functions: Your Data Cleanup Duo in Excel Catch formula errors and empty cells with these simple yet powerful tools. Welcome! Nothing is more frustrating than a spreadsheet filled with confusing error messages like `#N/A` or `#DIV/0!`. These errors can make your data look messy and unreliable. Similarly, dealing with blank cells can cause your formulas to break or your charts to look incomplete. Fortunately, Excel has two simple functions that are perfect for catching these problems and cleaning up your data: **ISERROR** and **ISBLANK**. They are often used in combination with other functions like `IF` to create elegant, foolproof formulas. The ISERROR Function The **ISERROR** function is a logical function that checks if a value is an error. It returns `TRUE` if the valu...