Date and Time - WORKDAY Function

Description

The WORKDAY function returns a number that represents a date that is the indicated number of working days before or after a date (the starting date). Working days exclude weekends and any dates identified as holidays.

Use WORKDAY to exclude weekends or holidays when you calculate invoice due dates, expected delivery times, or the number of days of work performed.

Syntax

WORKDAY (start_date, days, [holidays])

Arguments

Argument Description Required/ Optional
Start_date A date that represents the start date. Required
Days

The number of nonweekend and nonholiday days before or after start_date.

A positive value for days yields a future date.

A negative value yields a past date.

 Required
Holidays

An optional list of one or more dates to exclude from the working calendar, such as state and federal holidays and floating holidays.

The list can be either a range of cells that contain the dates or an array constant of the serial numbers that represent the dates.

 Optional

Notes

  • Microsoft Excel stores dates as sequential serial numbers so they can be used in calculations. By default, January 1, 1900 is serial number 1, and January 1, 2008 is serial number 39448 because it is 39,448 days after January 1, 1900

  • If days is not an integer, it is truncated.

  • If any argument is not a valid date, WORKDAY returns the #VALUE! error value.

  • If days is non-numeric, WORKDAY returns the #VALUE! error value.

  • If start_date plus days yields an invalid date, WORKDAY returns the #NUM! error value.

Applicability

Excel 2007, Excel 2010, Excel 2013, Excel 2016

Example

WORKDAY Function
advanced_excel_date_time_functions.htm
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