Block bad data, duplicates, and incorrect dates with these custom rules.

Excel's data validation feature is more versatile than you might think. Learn how to use literal values, input values, list values, and even formulas to restrict input date values using data ...

Follow the steps below to create a drop-down list using data validation in Excel. If you want to add a message pop up, you can click the Input Message tab and check the checkbox for “Show input ...

Excel’s dynamic, dependent drop-down lists are a fantastic solution for data management. These lists automatically adapt to your data, ensuring accuracy and efficiency. Dynamic array formulas are the ...

When multiple data variables are accommodated in a project, the time and spatial grids of those variables must be identical. As such, you must control the data other people enter. That’s when you need ...

Q: I have an Excel spreadsheet that I update weekly with our employees’ Actual Sales and Sales Goals. I manually insert a red circle to indicate those who did not reach their sales goal by more than a ...

Formulas are powerful tools for performing calculations and analyzing data in Excel. In this beginner’s guide, you’ll learn how to use formulas and explore some popular built-in functions. One of the ...

There are a few ways to count the number of items in an Excel list, depending on the data you have. In this tutorial, learn how to count items in Excel using the COUNTIF and SUBTOTAL functions. Image: ...

What is a function in Excel? A function is a built-in formula in Excel — basically, a shortcut for performing a calculation or other operation on cell data. There are nearly 500 Excel functions, and ...