Excel WeekNum and ISOWeekNum Functions

The WEEKNUM function will return the week number of a specific date as per the calendar year. The function will return an integer that represents a week number.

The Excel WEEKNUM function calculates the week number of a date within the year, aiding in weekly planning and analysis.

The WEEKNUM function takes a date and returns a number between 1 and 54 that corresponds to the week of the year.

Description · WeekNum uses the week containing January 1 as the first week of the year. The result from this function can range from 1 to 54.

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.

本文將說明公式語法及WEEKNUM 函數的使用方式中的Microsoft Excel。 描述. 傳回特定日期的週數。 例如，包含1 月1 日的該週是該年的第一週，因此會編號為第1 週。

How to calculate ISO week numbers, convert week numbers to dates, and get the number of weeks in a year, in Microsoft Office/Excel.

The WEEKNUM function is used in Excel to return the week number of a specific date in the year (a number between 1 and 54).

How to use WEEKNUM in Excel quick guide. Enter a date in any cell to find the corresponding calendar week. Type =ISOWEEKNUM(B1) in another cell.

WEEKNUM or Week Number in Excel is a Date & Time function that gives us the week number for the given date.