How to Calculate Calendar Week Numbers in Excel Using WEEKNUM Formula

Learn how to use the WEEKNUM formula in Excel to find the calendar week number for any date quickly and accurately.

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In Excel, use the formula `=WEEKNUM(date)` to calculate the calendar week of a specific date. Simply replace `date` with your cell reference, such as `A1`. This function returns a week number ranging from 1 to 52 (or 53), based on your date system settings.

FAQs & Answers

  1. What does the WEEKNUM function in Excel do? The WEEKNUM function returns the week number of a given date, ranging typically from 1 to 52 or 53, based on the date system set in Excel.
  2. How do I use the WEEKNUM formula to find a week number in Excel? Use the formula =WEEKNUM(date), replacing 'date' with a cell reference containing your date, like =WEEKNUM(A1).
  3. Can the WEEKNUM function return different week numbers for the same date? Yes, depending on the choice of return type in WEEKNUM, which affects the numbering system and the starting day of the week.

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