Excel automatically recognizes common formats, such as "3/17/2012," "Mar 17, 2012" or "17 Mar 2012." Use the Month function to extract the month number from a referenced cell.

References Microsoft Support: The IF Function - What It Is, and How to Use It Microsoft Excel 2010: Illustrated Complete; Elizabeth Reding and Lynn Wermers ...

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.

This month’s column shows how to use the remarkably versatile AGGREGATE function in Excel.

Excel's AGGREGATE function lets you perform calculations whilst ignoring hidden rows, errors, or other functions that appear in the data. It's similar to the SUBTOTAL function but provides more ...

Unfortunately, if you're using Excel 2019 or earlier, you won't be able to create your own functions using the methods described in this guide.