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 has over 475 formulas in its Functions Library, but we've selected the most popular, from date and time functions to mathematics and simple data manipulation.

How to use EDATE function in Excel In this tutorial, we want to find the dates after several months pass, after each date; for instance, we want to find the date five months after Jan-20-20.