Learn how to create a drop-down list in Excel without or with color using conditional formatting and data validation rules.

A common use of data validation is to create a drop-down list. Use it to restrict the type of data that users enter into an Excel cell.

Prevent duplicates before they happen by combining a simple function with data validation.

To create data bars in Excel, select your cells and then choose data bars from Conditional Formatting.

When you update this spreadsheet with new or different data, you won’t have to re-create the validation rule, but you will need to click Circle Invalid Data again. This tool would be useful to bring ...

Susan Harkins shows you a quick method for removing validation rules for multiple ranges in Excel, at the same time.

To edit a drop-down list in Excel, you can use a number of tools depending on how you created the list. Here's what you need to know.

In Excel, custom input or error messages explain the rules for each field to prevent data-entry errors. Here's how to set them up in a spreadsheet.