Data Validation in Microsoft Excel allows users to control the type of data entered into the worksheet. It picks from a list of rules to limit the type of data that can be entered into a cell.

Figure A We’ll add a data validation control to this sheet. Click the Data tab, and then, click Data Validation in the Data Tools group. In the resulting dialog, choose List from the Allow dropdown.

Go to Data on the Ribbon, and in the Data Tools group, choose Data Validation. The Data Validation window that pops up allows you to set your criteria in many ways. For our example, choose Whole ...

In this tutorial, I’ll show you how to combine a custom number format and data validation to force users to enter the correct number of numeric digits. Unfortunately, nothing can prevent the ...

In this tutorial, Excel Off The Grid walks you through how to harness the power of Excel’s `GROUPBY` function alongside other dynamic tools to create a responsive, user-friendly data summary.