Populating a dropdown with a dynamic list is easy thanks to Microsoft Excel’s UNIQUE() dynamic array function.

Excel 365 offers powerful tools for data analysis, with the “Unique” and “Distinct” functions standing out as essential features for managing large datasets. These functions, while similar ...

Input the ROWS function into that cell using the first and last cells of that column, not including the column heading. After that, you will know how many unique values are in that column.