WORKDAY.INTL function: Description, Usage, Syntax, Examples and Explanation

Syntax of WORKDAY.INTL function

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

The WORKDAY.INTL function syntax has the following arguments:

• Start_date: The start date, truncated to integer.
• Days: The number of workdays before or after the start_date. A positive value yields a future date; a negative value yields a past date; a zero value yields the start_date. Day-offset is truncated to an integer.
• Weekend(Optional): Indicates the days of the week that are weekend days and are not considered working days. Weekend is a weekend number or string that specifies when weekends occur.Weekend number values indicate the following weekend days:

Weekend string values are seven characters long and each character in the string represents a day of the week, starting with Monday. 1 represents a non-workday and 0 represents a workday. Only the characters 1and 0 are permitted in the string. 1111111 is an invalid string.

For example, 0000011 would result in a weekend that is Saturday and Sunday.

• Holidays (Optional):  An optional set of one or more dates that are to be excluded from the working day calendar. Holidays shall be a range of cells that contain the dates, or an array constant of the serial values that represent those dates. The ordering of dates or serial values in holidays can be arbitrary.

WORKDAY.INTL formula explanation

• If start_date is out of range for the current date base value, WORKDAY.INTL returns the #NUM! error value.
• If any date in holidays is out of range for the current date base value, WORKDAY.INTL returns the #NUM! error value.
• If start_date plus day-offset yields an invalid date, WORKDAY.INTL returns the #NUM! error value.
• If a weekend string is of invalid length or contains invalid characters, WORKDAY.INTL returns the #VALUE! error value.

Example of WORKDAY.INTL function

• Add workdays to date custom weekends in Excel
• Add workdays no weekends in Excel
• Calculate series of dates by workdays in Excel
• Get project midpoint in Excel

Steps to follow:

1. Open a new Excel worksheet.

2. Copy data in the following table below and paste it in cell A1

Note: For formulas to show results, select them, press F2 key on your keyboard and then press Enter.

You can adjust the column widths to see all the data, if need be.