ISOWEEKNUM Function in Excel: Syntax, Examples and Free Practice
ISOWEEKNUM is an Excel Date & Time function. Returns the ISO week number of the year for a date.
ISOWEEKNUM syntax
=ISOWEEKNUM(date)
Arguments
date: The date to evaluate
When to use ISOWEEKNUM
ISOWEEKNUM is used in scheduling, deadline tracking, and reporting that spans specific date ranges.
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Frequently asked questions
What does the ISOWEEKNUM function do in Excel?
Returns the ISO week number of the year for a date.
What is the syntax of ISOWEEKNUM in Excel?
The syntax is =ISOWEEKNUM(date). date: The date to evaluate.
Where can I practice ISOWEEKNUM online for free?
Open the free live spreadsheet on Cellgrids and try ISOWEEKNUM yourself. No Excel install is needed and you can start without signing up.
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