Functions are the driving force of any Microsoft Excel spreadsheet, generating a single value or an array of results based on certain arguments you input. However, combining—or nesting—functions ...

Bookkeepers, project managers, HR departments and more use the Excel Date & Time functions WEEKNUM, ISOWEEKNUM, WORKDAY, WORKDAY.INTL to calculate time. Here's how.

Learn how to create date lists in Excel using autofill, formulas, and advanced techniques. Save time and boost efficiency with these tips ...

Microsoft Excel's Month and Weekday functions output numeric values for a given date. The Month function results in the month numbers, such as "3" for March or "12" for December.

DATEDIF (), which means Date + Dif, is a compatibility function left over from Lotus 1-2-3 that Microsoft adopted in Excel version 2000. It's fallen off current Excel menus, but you can still use it.