Formula generator for WEEKNUM function
The WEEKNUM function returns a number representing the week of the year where the provided date falls. The optional 'type' argument allows you to specify the system used to determine the first week of the year. By default, the 'type' argument is set to 1, which means the week containing January 1st is considered as the first week of the year.
Formula generator
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How to generate an WEEKNUM formula using AI.
To obtain information on the ARRAY_CONSTRAIN formula, you could ask the AI chatbot the following question: “To get the WEEKNUM formula for your data, you can ask the AI chatbot the following question: "What is the Excel formula to calculate the week number for a given date?"”
WEEKNUM formula syntax
The WEEKNUM function in Excel is used to determine the week number of a specific date. It follows the syntax: WEEKNUM(serial_number, [return_type]) The "serial_number" is the date you want to find the week number for. It can be entered as a date, a reference to a cell containing a date, or a formula that returns a date. The "return_type" is an optional argument that specifies the type of week numbering system to use. It can be entered as 1, 2, 3, or 21. If omitted, the default return_type is 1, which uses the U.S. system where weeks start on Sunday. Here are the different return_type options: 1: Weeks start on Sunday and week 1 includes January 1st. 2: Weeks start on Monday and week 1 includes January 1st. 3: Weeks start on Monday and week 1 is the first week that has at least 4 days in the year. 21: Weeks start on Monday and week 1 includes the first Thursday of the year. Remember to format the cell with the WEEKNUM function as a number to display the week number correctly.
Use Cases & Examples
In these use cases, we use the WEEKNUM function to determine the week number of a given date. The WEEKNUM function helps us organize and analyze data based on weekly time periods.
Tracking Project Deadlines
Description
In this use case, we use the WEEKNUM function to track project deadlines. We have a column with project start dates, and we want to calculate the week number for each start date.
Result
=WEEKNUM(A2)
Analyzing Sales Performance
Description
In this use case, we use the WEEKNUM function to analyze sales performance. We have a table with sales data, including the date of each sale. We want to calculate the week number for each sale to identify trends and patterns in sales over time.
Result
=WEEKNUM(B2)
Scheduling Shifts
Description
In this use case, we use the WEEKNUM function to schedule shifts. We have a table with employee names and their shift dates. We want to calculate the week number for each shift date to ensure fair distribution of shifts among employees.
Result
=WEEKNUM(C2)
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Include Key Details
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