The TIMEVALUE function in Microsoft Excel is a Date and Time function, and its purpose is to convert a time in the form of text to a serial number.

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

Excel DATEVALUE is a Date and time function, and its purpose is to converts a date in the form of text to a serial number. Learn how to use it.

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 ...

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.

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.