This article describes the formula syntax and usage of the WEEKNUM function in Microsoft Excel.. Description. Returns the week number of a specific date. For example, the week containing January 1 is the first week of the year, and is numbered week 1.

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Edit a drop-down list that's based on an Excel Table. If you set up your list source as an Excel table, then all you need to do is add or remove items from the list, and Excel will automatically update any associated drop-downs for you.. To add an item, go to the end of the list and type the new item.

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Get started with basic tasks in Excel such as opening a workbook, entering and formatting data, calculating data, and trying some quick analysis features..

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