WORKDAY.INTL

In this comprehensive guide, we will explore everything you need to know about the WORKDAY.INTL function in Excel. The WORKDAY.INTL function is a powerful tool that allows you to calculate the number of workdays between two dates, taking into account weekends, holidays, and custom work schedules. Whether you are a beginner or an advanced Excel user, this article will provide you with valuable insights, examples, tips, and tricks to help you master the WORKDAY.INTL function.

WORKDAY.INTL Syntax

The WORKDAY.INTL function has the following syntax:

=WORKDAY.INTL(start_date, days, [weekend], [holidays])

Where:

• start_date is the starting date from which you want to calculate the number of workdays.
• days is the number of workdays you want to add or subtract from the start_date.
• [weekend] (optional) is a code or string that specifies which days of the week are considered weekends. If omitted, Excel assumes Saturday and Sunday are weekends.
• [holidays] (optional) is a range of dates that should be excluded from the workdays calculation, such as public holidays or company-specific non-working days.

WORKDAY.INTL Examples

Let’s look at some examples to better understand how the WORKDAY.INTL function works:

Example 1: Calculate the end date of a project that starts on January 1, 2022, and lasts for 10 workdays, considering only Saturdays and Sundays as weekends.

=WORKDAY.INTL(“2022-01-01”, 10)

This formula will return January 14, 2022, as the end date of the project.

Example 2: Calculate the end date of a project that starts on January 1, 2022, and lasts for 10 workdays, considering Fridays and Saturdays as weekends.

=WORKDAY.INTL(“2022-01-01”, 10, “7”)

This formula will return January 15, 2022, as the end date of the project.

Example 3: Calculate the end date of a project that starts on January 1, 2022, and lasts for 10 workdays, considering only Saturdays and Sundays as weekends, and excluding a list of holidays.

=WORKDAY.INTL(“2022-01-01”, 10, , A1:A3)

Assuming cells A1:A3 contain the holiday dates, this formula will return the end date of the project, taking into account the specified holidays.

WORKDAY.INTL Tips & Tricks

Here are some tips and tricks to help you make the most of the WORKDAY.INTL function:

1. Use the WORKDAY.INTL function to calculate the number of workdays between two dates by setting the days argument to a negative value. For example, to calculate the number of workdays between January 1, 2022, and January 14, 2022, use the formula:

=WORKDAY.INTL(“2022-01-14”, -10)

2. When specifying the [weekend] argument, you can use either a code (1-7) or a string of seven 0s and 1s, where 1 represents a non-working day and 0 represents a working day. For example, to consider Sundays and Mondays as weekends, you can use either “17” or “0111110” as the [weekend] argument.
3. If you need to calculate the number of workdays between two dates, taking into account weekends and holidays, you can use the NETWORKDAYS.INTL function instead of the WORKDAY.INTL function.

Common Mistakes When Using WORKDAY.INTL

Here are some common mistakes to avoid when using the WORKDAY.INTL function:

1. Make sure to enter the start_date and days arguments correctly. The start_date should be a valid date, and the days argument should be a numeric value.
2. When specifying the [weekend] argument, ensure that you use the correct code or string format. Using an incorrect code or string may result in an error or incorrect calculation.
3. When specifying the [holidays] argument, make sure to use a range of cells containing the holiday dates. Using a single cell or an incorrect range may result in an error or incorrect calculation.

Why Isn’t My WORKDAY.INTL Working?

If your WORKDAY.INTL function is not working as expected, consider the following troubleshooting steps:

1. Check the start_date and days arguments for any errors or incorrect values.
2. Ensure that the [weekend] argument is specified correctly, using either a valid code or string format.
3. Verify that the [holidays] argument is specified correctly, using a range of cells containing the holiday dates.
4. Make sure that your Excel version supports the WORKDAY.INTL function. The WORKDAY.INTL function is available in Excel 2010 and later versions.

WORKDAY.INTL: Related Formulae

Here are some related formulae that you may find useful when working with the WORKDAY.INTL function:

1. WORKDAY: Calculates the end date of a project, considering only Saturdays and Sundays as weekends, and excluding a list of holidays. Syntax: =WORKDAY(start_date, days, [holidays])
2. NETWORKDAYS: Calculates the number of workdays between two dates, considering only Saturdays and Sundays as weekends, and excluding a list of holidays. Syntax: =NETWORKDAYS(start_date, end_date, [holidays])
3. NETWORKDAYS.INTL: Calculates the number of workdays between two dates, taking into account custom weekends and a list of holidays. Syntax: =NETWORKDAYS.INTL(start_date, end_date, [weekend], [holidays])
4. EDATE: Calculates the date that is a specified number of months before or after a given date. Syntax: =EDATE(start_date, months)
5. EOMONTH: Calculates the last day of the month that is a specified number of months before or after a given date. Syntax: =EOMONTH(start_date, months)

By mastering the WORKDAY.INTL function and its related formulae, you can efficiently calculate workdays, project end dates, and other date-related calculations in Excel, taking into account weekends, holidays, and custom work schedules.