Drop-down lists in Excel are a great way to speed up data entry, keep your sheet tidy, and avoid typos. No formulas required!

Microsoft Excel's Data Validation tool lets you add a drop-down list to a cell based on existing data in a column. However, how this works depends on whether the source data is part of a formatted ...

Dropdowns are useful features that simplify data entry and enforce data validations in spreadsheet software. Creating a dropdown list is easy. And you might have done that already in Excel. But did ...