Week_Num = WorksheetFunction.WeekNum(DateSerial(2021, 11, 11), vbMonday)ĭateSerial function takes year, month and date as argument and create a date variable and the week number is stored in the variable Week_Num, you can pass date variable by modifying the program. If you leave this argument empty, Sunday will be 1 and Monday will be 2 etc. By default, Januis serial number 1, and Januis serial number 39448 because it is 39,448 days after January 1, 1900. This argument tells the function how to number the days of the week. ![]() Paste below code to pass a date into VBA code to convert it into week number. Microsoft Excel stores dates as sequential serial numbers so they can be used in calculations. ![]() Now we will convert a date into week number of the year by providing a date variable in the program. A third variable should equal Day (Date), and you can then use Month (Date) to figure out which 'aXX' variable's scopre your current days falls under. In this code we are providing today’s date and converting date into week number and the week number will be displayed in a message box. Yeah use one variable for each month (a01-a12), assign the number of days to each variable (a01 31, If Not LeapYear True Then a02 28, etc). MsgBox “Today’s week number is ” & Week_Num Week_Num = WorksheetFunction.WeekNum(Now, vbMonday) Now double click the newly created module to open that and paste the below code in the module. See screenshot: Notes: (1) In above formula. At the moment this works for 2021 but not 2020: Excel Formula: TEXT((MONTH(DATE(A2,1,B27-4)))29,'mmm') Year is in A2, week number in B2. So in 2020 it was January 5th which should start as week 1, in 2021 it's January 3rd. Insert a module in which we will write a VBA code to convert date into week number. Select a blank cell you will return the week number, enter this formula: WEEKNUM(B1,1), and press the Enter key. I need the month number based on the week number, running from Sunday to Saturday, starting on the first Sunday of the year. Open VB editor from Developer tab in excel as shown in the figure. We will use two example to undnerstand how could we get week number from a date variable in VBA, first by using today’s date and in second method we will pass a date variable find its week number. Our aim is to create vba code that will give us week number based on the argument that we pass in the code ![]() In this post we will see how to convert a date into week number in VBA, excel has an inbuilt function WEEKNNUM but it can’t be used in VBA context.
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