Google Sheets

How to Use the WORKDAY.INTL Function in Google Sheets


Google Sheets is a powerful tool that helps us organize, analyze, and manipulate data. One of the many functions it offers is WORKDAY.INTL, which is especially useful for managing work schedules and project timelines. In this article, we will explore what the WORKDAY.INTL function does, when to use it, its syntax, and provide some practical examples.

When to Use the WORKDAY.INTL Function:

The WORKDAY.INTL function is used to calculate the end date of a task or project, excluding weekends and specified holidays. This function is incredibly handy for businesses and students alike, ensuring that deadlines are met efficiently.

Let’s say you have a school project due in 10 days, but you want to exclude weekends (Saturday and Sunday) from the calculation. WORKDAY.INTL can help you determine the date by which you need to complete the project.

How to use WORKDAY.INTL function in Google Sheets

  1. Type “=WORKDAY.INTL ” or go to the “Insert” tab ➝ “Function” ➝ “Date” ➝ “WORKDAY.INTL ”.
How To Use WORKDAY Function In Google Sheets
How To Use WORKDAY Function In Google Sheets


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

  • start_date – The date from which to begin counting.
  • num_days – The number of working days to advance from start_date. If negative, counts backwards.
  • weekend – [ OPTIONAL – 1 by default ] – A number or string representing which days of the week are considered weekends.
    • String method: weekends can be specified using seven 0’s and 1’s, where the first number in the set represents Monday and the last number is for Sunday. A zero means that the day is a work day, a 1 means that the day is a weekend. For example, “0000011” would mean Saturday and Sunday are weekends.
    • Number method: instead of using the string method above, a single number can be used. 1 = Saturday/Sunday are weekends, 2 = Sunday/Monday, and this pattern repeats until 7 = Friday/Saturday. 11 = Sunday is the only weekend, 12 = Monday is the only weekend, and this pattern repeats until 17 = Saturday is the only weekend.
  • holidays – [ OPTIONAL ] – A range or array constant containing the dates to consider holidays.


Step 1: Open Your Google Sheet

Open Your Google Sheet
Open Your Google Sheet

Step 2: Select a Cell and Enter the Function

Select A Cell And Enter The Function
Select A Cell And Enter The Function

Step 3: Press Enter: Hit the Enter key to apply the function

Hit The Enter Key To Apply The Function
Hit The Enter Key To Apply The Function

Tips for Optimization

The WORKDAY.INTL function in Google Sheets is used to calculate the date of a future or past working day, excluding weekends and specified holidays. To optimize its use, consider the following tips:

  1. Use Efficient Date References:
    • Whenever possible, refer to cell references for the date arguments (start date, days, and holidays) instead of entering them directly into the formula. This makes it easier to update the inputs.
  2. Organize Holiday Lists:
    • If you have multiple holidays to consider, create a separate list or range for holidays and reference it in the formula. This keeps your formula cleaner and more manageable.
  3. Use Named Ranges:
    • If you frequently work with specific date ranges or holiday lists, consider naming them. This makes formulas more readable and easier to maintain.
  4. Leverage Array Formulas:
    • You can use array formulas to calculate multiple WORKDAY.INTL results at once. This is especially helpful when you need to find multiple working days in a series.
  5. Minimize Recalculation:
    • If your sheet contains a large number of WORKDAY.INTL formulas, excessive recalculation can slow down your spreadsheet. Use calculation settings to optimize performance. Go to “File” > “Spreadsheet settings” > “Calculation” and select “On change and every 30 minutes” or “On change and every hour” if possible.
  6. Use WORKDAY.INTL with Other Functions:
    • Combine WORKDAY.INTL with other functions like IF, AND, OR, and DATE to create more complex date calculations. This allows you to handle various scenarios efficiently.
  7. Error Handling:
    • Implement error handling techniques, such as the IFERROR function, to deal with potential errors in your formulas. For instance, if a holiday list is missing, you can set a default behavior or display an error message.
  8. Documentation and Comments:
    • Add comments to your formulas to explain their purpose and any customizations made. This is particularly useful for sharing or revisiting spreadsheets later.
  9. Test Your Formula:
    • Before relying on a WORKDAY.INTL formula for critical calculations, test it with different scenarios and edge cases to ensure it behaves as expected.
  10. Regularly Update Holidays:
    • If your holiday list changes over time, make sure to update it in your spreadsheet to maintain accurate calculations.
  11. Consider Other Date Functions:
    • Depending on your specific needs, evaluate whether other date functions like NETWORKDAYS.INTL or EDATE might be more suitable for your task.

Real-World Application

The WORKDAY.INTL function in Google Sheets is used to calculate a date that is a specified number of workdays (business days) before or after a given date, excluding specified weekend days. It’s a powerful tool with several real-world applications:

  1. Project Management:
    • Scheduling Tasks: You can use WORKDAY.INTL to schedule tasks, ensuring that weekends or specific holidays are excluded from the timeline.
  2. Employee Leave and Attendance:
    • Leave Calculations: HR departments can use it to calculate the end date of an employee’s leave, excluding weekends and holidays.
  3. Financial Planning:
    • Loan and Investment Maturity Dates: Finance professionals can use it to calculate maturity dates for loans or investments, accounting for weekends and holidays.
  4. Inventory Management:
    • Lead Time Calculation: For businesses that need to restock inventory, WORKDAY.INTL can be used to calculate the expected delivery date, considering business days.
  5. Sales Forecasting:
    • Sales Cycle Duration: It can be used to estimate how long it will take to convert leads into actual sales, taking into account typical workdays.
  6. Project Deadlines:
    • Deadline Adjustments: If a project deadline falls on a non-working day, WORKDAY.INTL can be used to determine the nearest working day for the deadline.
  7. Supply Chain Management:
    • Shipping and Delivery Dates: Companies can use it to estimate delivery dates for goods in transit, factoring in weekends and holidays.
  8. Customer Service Management:
    • Response Time Calculations: It can be used to calculate the expected response time for customer inquiries, considering business hours.
  9. Event Planning:
    • Event Countdowns: Event planners can use it to create countdowns, ensuring they consider only business days in their planning.
  10. Service Level Agreements (SLAs):
    • SLA Compliance Tracking: Companies with SLAs can use it to track compliance with response and resolution times, excluding non-working days.
  11. Travel Planning:
    • Trip Duration Calculations: Individuals can use WORKDAY.INTL to plan trips, factoring in weekends and holidays.
  12. Resource Allocation:
    • Resource Availability: It can be used in resource allocation systems to calculate when a particular resource will become available for a new project.
  13. Loan Payment Schedules:
    • Amortization Schedules: Banks and financial institutions can use it to calculate loan payment due dates.
  14. Legal and Court Proceedings:
    • Filing Deadlines: Legal professionals can use WORKDAY.INTL to calculate filing deadlines, accounting for non-working days.
  15. Retail Operations:
    • Promotion Duration: Retailers can use it to plan the duration of sales promotions, ensuring they only consider days when the store is open.


In conclusion, the WORKDAY.INTL function in Google Sheets is an essential tool for managing project timelines and work schedules. It allows you to accurately calculate completion dates by excluding weekends and specified holidays. This function is not only valuable for businesses but also for students and anyone working with deadlines.

With a simple syntax of =WORKDAY.INTL(start_date, days, [weekend], [holidays]), you can customize the function to meet your specific needs. Whether you’re planning a project or setting personal goals, WORKDAY.INTL can help you stay on track and ensure tasks are completed on time.

Remember to experiment with different configurations to find the setup that works best for you. By mastering this function, you’ll have a powerful tool at your disposal for effective time management in Google Sheets.


Q1: Can I use the WORKDAY.INTL function to calculate only weekends?

No, the WORKDAY.INTL function is designed to exclude weekends from calculations. If you want to include only weekends, you would need to use a different approach.

Q2: Can I use dates in a different format with the WORKDAY.INTL function?

Yes, you can use dates in various formats such as “dd/mm/yyyy” or “mm/dd/yyyy”. Just ensure that the date format is consistent with your system settings.

Q3: Can I use WORKDAY.INTL to calculate workdays in a non-standard workweek?

Yes, you can customize the function to accommodate different workweek configurations by adjusting the weekend parameter.


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