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.

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.

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.

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 ...

If you have to work with a date stamp in Microsoft Excel that includes date and time, you can use these simple expressions to extract both components, making them easier to work with.