Google Sheets

## How do you use ISOWEEKNUM in Google Sheets?

ISOWEEKNUM is a Google Sheets function that calculates the ISO week number for a given date. The ISO week number is a numeric representation of the week of the year, with the first week of the year starting on Monday and the last week of the year ending on Sunday. The ISO week number is incremented by 1 for each week of the year, regardless of the number of days in the week.

## What is the syntax of ISOWEEKNUM in Google Sheets?

ISOWEEKNUM is a function in Google Sheets that returns the ISO week number for a given date. The syntax is as follows:

=ISOWEEKNUM(serial_number)

Where "serial_number" is the date in serial number format. For example, if you wanted to find the ISO week number for October 15, 2018, you would use the following formula:

=ISOWEEKNUM(A15)

This would return the number "45" which is the ISO week number for October 15, 2018.

## What is an example of how to use ISOWEEKNUM in Google Sheets?

ISOWEEKNUM is a function in Google Sheets that calculates the ISO week number for a given date. The ISO week number is a standard way of numbering weeks that is used by many organizations, including the UN and the World Health Organization. To use the ISOWEEKNUM function, you simply need to enter the date in the format "mm/dd/yyyy" and then include the function "=ISOWEEKNUM( )" in your spreadsheet. The function will return the ISO week number for the given date.

## When should you not use ISOWEEKNUM in Google Sheets?

ISOWEEKNUM should not be used in Google Sheets when you need to calculate the week number of a date that is not in the range of 1-53. For example, if you need to find the week number for December 25th, 2016, ISOWEEKNUM will return the value 52 because it is assuming that the date is in the range of 1-53. In this case, you would need to use the WEEKNUM function, which takes into account the year and month of the date.

## What are some similar formulae to ISOWEEKNUM in Google Sheets?

ISOWEEKNUM is a Google Sheets formula that calculates the ISO week number for a given date. It is based on the ISO 8601 standard for week numbering. There are a few other formulas that can calculate the ISO week number for a given date. The WEEKNUM function in Excel can also calculate the ISO week number for a given date. The WEEKNUM function in Excel is based on the ISO 8601 standard for week numbering. The DATEPART function in Excel can also calculate the ISO week number for a given date. The DATEPART function in Excel is based on the ISO 8601 standard for week numbering.

### Google Sheets

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