# 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:
2. =WORKDAY.INTL(“2022-01-14”, -10)

3. 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.
4. 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.

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