Table of Contents
The ISOWEEKNUM function is a useful tool in Google Sheets that allows users to quickly and accurately determine the ISO week number of a specific date. This function follows the International Organization for Standardization (ISO) standard for week numbering, which defines the first week of the year as the week containing the first Thursday. By using the ISOWEEKNUM function, users can easily organize and analyze their data by week, making it a valuable tool for project management, scheduling, and data analysis. To use this function, simply input the desired date in the designated cell and the ISOWEEKNUM function will automatically calculate and display the week number. This function is especially helpful for users working with international teams or conducting business across various time zones.
ISOWEEKNUM
Returns the number of the ISO (International Organization for Standardization) week of the year where the provided date falls.
Sample Usage
ISOWEEKNUM(DATE(1969, 7, 20))
ISOWEEKNUM("6/14/2002")
Syntax
ISOWEEKNUM(date)
date– The date for which to determine the ISO week number. Must refer to a cell containing a date, number, or function returning a date type.
Notes
- When entering the date, use the
DATEfunction, as text values might return errors. - Per the European system for numbering weeks (also known as ISO 8601):
- Weeks begin on Monday and end on Sunday.
- Week 1 of the year is the week containing the first Thursday of the year.
- As a result, if the first Thursday is after January 4, at least one of the following days, January 1-3, will have an
ISOWEEKNUMof 52 or 53. - Similarly, if the first Thursday is before January 4, at least one of the following days, December 29-31, will have an
ISOWEEKNUMof 1. - If the first Thursday is January 4, December 29-31 of the previous year will have
ISOWEEKNUMof 52 and January 1-7 of the current year will haveISOWEEKNUMof 1.
- As a result, if the first Thursday is after January 4, at least one of the following days, January 1-3, will have an
See Also
WEEKNUM: Returns a number representing the week of the year where the provided date falls.WEEKDAY: Returns a number representing the day of the week of the date provided.DAYS360: Returns the difference between two days based on the 360-day year used in some financial interest calculations.DATE: Converts a year, month, and day into a date.DATEVALUE:Converts a provided date string in a known format to a date value.
Cite this article
stats writer (2024). How can I use ISOWEEKNUM function in Google Sheets?. PSYCHOLOGICAL SCALES. Retrieved from https://scales.arabpsychology.com/stats/how-can-i-use-isoweeknum-function-in-google-sheets/
stats writer. "How can I use ISOWEEKNUM function in Google Sheets?." PSYCHOLOGICAL SCALES, 28 Jun. 2024, https://scales.arabpsychology.com/stats/how-can-i-use-isoweeknum-function-in-google-sheets/.
stats writer. "How can I use ISOWEEKNUM function in Google Sheets?." PSYCHOLOGICAL SCALES, 2024. https://scales.arabpsychology.com/stats/how-can-i-use-isoweeknum-function-in-google-sheets/.
stats writer (2024) 'How can I use ISOWEEKNUM function in Google Sheets?', PSYCHOLOGICAL SCALES. Available at: https://scales.arabpsychology.com/stats/how-can-i-use-isoweeknum-function-in-google-sheets/.
[1] stats writer, "How can I use ISOWEEKNUM function in Google Sheets?," PSYCHOLOGICAL SCALES, vol. X, no. Y, ص Z-Z, June, 2024.
stats writer. How can I use ISOWEEKNUM function in Google Sheets?. PSYCHOLOGICAL SCALES. 2024;vol(issue):pages.