Excel Validation Rule Made Easy

Introduction to Excel Validation Rules

Excel validation rules are a powerful tool that can help you control the data that is entered into your spreadsheet. By setting up validation rules, you can ensure that the data entered is accurate, consistent, and meets specific criteria. In this article, we will explore the different types of validation rules that are available in Excel, and provide step-by-step instructions on how to create and apply them.

Types of Validation Rules

There are several types of validation rules that can be applied in Excel, including:

• Whole Number: This rule checks if the entered value is a whole number.
• Decimal: This rule checks if the entered value is a decimal number.
• Date: This rule checks if the entered value is a date.
• Time: This rule checks if the entered value is a time.
• Text Length: This rule checks the length of the entered text.
• List: This rule checks if the entered value is in a specified list.

Creating a Validation Rule

To create a validation rule in Excel, follow these steps:

• Select the cell or range of cells that you want to apply the validation rule to.
• Go to the Data tab in the ribbon.
• Click on the Data Validation button in the Data Tools group.
• Select Settings from the drop-down menu.
• In the Data Validation dialog box, select the type of validation rule you want to apply from the Allow drop-down menu.
• Specify the criteria for the validation rule in the Data box.
• Click OK to apply the validation rule.

Example of a Validation Rule

Let’s say you want to create a validation rule that checks if the entered value is a whole number between 1 and 100. To do this, follow these steps:

• Select the cell or range of cells that you want to apply the validation rule to.
• Go to the Data tab in the ribbon.
• Click on the Data Validation button in the Data Tools group.
• Select Settings from the drop-down menu.
• In the Data Validation dialog box, select Whole Number from the Allow drop-down menu.
• In the Data box, enter the formula =AND(A1>=1, A1<=100), where A1 is the cell that you want to apply the validation rule to.
• Click OK to apply the validation rule.

📝 Note: You can also use the Error Alert tab in the Data Validation dialog box to specify an error message that will be displayed if the entered value does not meet the validation criteria.

Using Lists in Validation Rules

You can also use lists in validation rules to check if the entered value is in a specified list. To do this, follow these steps:

• Create a list of values in a range of cells.
• Select the cell or range of cells that you want to apply the validation rule to.
• Go to the Data tab in the ribbon.
• Click on the Data Validation button in the Data Tools group.
• Select Settings from the drop-down menu.
• In the Data Validation dialog box, select List from the Allow drop-down menu.
• In the Source box, enter the range of cells that contains the list of values.
• Click OK to apply the validation rule.

Using Tables to Display Validation Rules

You can use tables to display validation rules in a clear and concise manner. Here is an example of a table that displays the different types of validation rules:

Validation Rule	Description
Whole Number	Checks if the entered value is a whole number.
Decimal	Checks if the entered value is a decimal number.
Date	Checks if the entered value is a date.
Time	Checks if the entered value is a time.
Text Length	Checks the length of the entered text.
List	Checks if the entered value is in a specified list.

In summary, Excel validation rules are a powerful tool that can help you control the data that is entered into your spreadsheet. By following the steps outlined in this article, you can create and apply validation rules to ensure that the data entered is accurate, consistent, and meets specific criteria.