Use data validation to restrict the type of data or the values that users enter into a cell, like a dropdown list.

You can use data validation to restrict the type of data or values that users enter into cells. This is an advanced topic on data validation. For an introduction to data validation, and how to …

You can insert a drop-down list of valid entries (also called a drop-down menu or drop-down box) in Excel to make data entry easier, or to limit entries to certain items that you define.

Add data validation. Click the control that you want to add data validation to. On the Format menu, click Data Validation. In the Data Validation dialog box, click Add. Under If this condition is …

On the Data tab, in the Data Tools group, click the arrow next to Data Validation, and then click Circle Invalid Data. Excel displays a red circle around any cells that contain invalid data. All …

You can find cells in a workbook that contain data validation by using the Go To Special dialog box. On the Edit menu, point to Find, and then click Go To. Click Special. Select Data …

Go to Data > Data Validation. On the Settings tab, click in the Source box, and then on the worksheet that has the entries for your drop-down list, Select cell contents in Excel containing …

Validation rules are designed to check for certain conditions within a form and, if those conditions are met, notify the users so that they can take corrective action. There are two ways that …

Data bars, color scales, and icon sets are conditional formats that create visual effects in your data. These conditional formats make it easier to compare the values of a range of cells at the …

Conditional formatting can help make patterns and trends in your data more apparent. To use it, you create rules that determine the format of cells based on their values, such as the following …