Excel Tutorial – WEEKNUM

The WEEKNUM function in Microsoft Excel is a useful tool for determining the week number for a given date. This can be helpful for tasks such as scheduling or analyzing data.

Here’s how to use the WEEKNUM function:

1. Open a blank Excel spreadsheet.
2. In the cell where you want to display the result of the WEEKNUM function, type the following formula: =WEEKNUM(date, [return_type])
3. Replace “date” with the cell reference or date value for the date you want to find the week number for. For example, if the date is in cell A1, you would enter A1 in place of “date”.
4. Optionally, you can specify the “return_type” parameter to determine the numbering system for the weeks. The default return type is 1, which returns the week number with the week starting on Sunday as the first week of the year. You can use the following values for the return type:
   • 1: Week starts on Sunday (default)
   • 2: Week starts on Monday
5. Press Enter to calculate the result. The result will be the week number for the specified date, according to the numbering system you selected.

For example, let’s say you have a list of dates in column A and you want to find the week number for each date. Here’s how the formula would look for the first date in the list:

=WEEKNUM(A1, 2)

This formula would use the date in cell A1 and return the week number with the week starting on Monday.