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 ...

Data validation in Microsoft Excel is a great way to limit what can be entered into a cell. However, creating rules using a formula allows you to enforce even more precise parameters—and there are ...

Launch Microsoft Excel. Enter data into the spreadsheet or use existing data. Select the cell you want to place the result Enter the formula Press Enter. Launch Microsoft Excel. Enter your data or use ...