Documentation/Calc Functions/NETWORKDAYS

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Function name:

NETWORKDAYS

Category:

Date and Time

Summary:

Calculates the net number of work or business days between two dates. Holidays (or other non-work days) can be specified and the standard workweek can be redefined.

Syntax:

NETWORKDAYS(StartDate; EndDate[; [Holidays][; Workdays]])

Returns:

Returns an integer value which is the number of work or business days in the given period, excluding defined holidays and weekend days. The start and end dates of the period are counted unless they are defined as holidays or weekend days.

Arguments:

StartDate is the date (in quotation marks) or a date-time serial number, or a reference to the cell containing one of those types, which is either the start date or the end date of the period for which the calculation is to be carried out.

EndDate is the date (in quotation marks) or a date-time serial number, or a reference to the cell containing one of those types, which is either the end date or the start date of the period for which the calculation is to be carried out.

Holidays is a list of dates corresponding to holidays (or any other days) that are to be excluded from the count as non-work days. This list can be passed as a range of cells containing date-time serial numbers (possibly displayed in a date format). Alternatively, the list can be passed as an inline array containing either date strings (in quotation marks) or date-time serial numbers. If omitted, no holidays are assumed.

Workdays is a list of numbers defining the standard workweek. This list contains seven entries with the first entry corresponding to Sunday and the seventh entry corresponding to Saturday. Each number is either zero to indicate a workday or non-zero (usually 1) to indicate a non-work day. This list can be passed either as a range of cells containing the numbers or as an inline array. If omitted, the default configuration is for only Saturday and Sunday to be non-work days ({1; 0; 0; 0; 0; 0; 1} when expressed as an inline array).

  • If either StartDate or EndDate is not a valid date expression, then NETWORKDAYS reports a #VALUE! error.
  • If StartDate is earlier than EndDate, the result is a positive integer; if StartDate is later than EndDate, the result is a negative integer.
  • NETWORKDAYS ignores any time components of StartDate and EndDate.
  • If Holidays is passed as an inline array, a #VALUE! error results if any entry of that array is not a date or a date-time sequence number.
  • If Holidays is passed as a cell range, then in most cases cells that do not contain a date or a date-time serial number lying within the relevant period are ignored. However, if a cell contains an error code (such as #NAME?), that error status will be propagated as the result of NETWORKDAYS.
  • If Workdays does not specify exactly seven numbers, NETWORKDAYS reports an invalid argument error (Err:502).
  • If Workdays is passed as a cell range, if a cell contains an error code (such as #NAME?), that error status will be propagated as the result of NETWORKDAYS.

Additional details:

Details specific to NETWORKDAYS function

NETWORKDAYS is inclusive, counting the first and last days of the period (see #Examples: section below).

Calc’s NETWORKDAYS function satisfies the requirements of ODF 1.2. If you export a spreadsheet from Calc to Microsoft Excel that contains calls to NETWORKDAYS which utilize all four arguments, then that spreadsheet will generate errors when opened in Excel. This is because the Excel NETWORKDAYS function does not support the Workdays parameter specified in ODF 1.2. For interoperability with Excel, you can use the NETWORKDAYS.INTL function.

General information about Calc's Date and Time functions

Note pin.svg

For convenience the information in this subsection is repeated on all pages that describe functions in the Date and Time category.


  • Internal to Calc, a date/time value is handled as a real number and this is sometimes referred to by the term date-time serial number. For example, 2021-02-08 12:00:00 corresponds to the date-time serial number 44235.5. The integer part of a date-time serial number (before the decimal point) is the number of days since a defined start date. The fractional part of a date-time serial number (after the decimal point) is the time of day expressed as a fraction of a day. For example, 0.25 is equivalent to 06:00:00 and 0.75 is equivalent to 18:00:00.
  • Calc uses 1899-12-30 as the default start date (day 0) but you can go to Tools > Options > LibreOffice Calc > Calculate to select alternative start dates; however, unless you have specific requirements for compatibility with legacy spreadsheet applications, we recommend that you do not change this setting. If you copy and paste cells containing date values between different spreadsheets, check that both documents are set to use the same start date to avoid unexpected changes to the dates displayed.
  • Negative date-time serial numbers correspond to dates earlier than Calc's start date. Calc calculates all dates back to 15th October 1582 using the Gregorian calendar. The day before this is 4th October 1582, and Calc uses the Julian calendar for earlier dates.
  • A date-time serial number is the same as any other number, except that we usually choose to display it formatted as a date/time. You can enter a number in a cell and then change the cell’s formatting to display the value as a date/time. You can also enter a date/time in a cell and then change the cell’s formatting to display the date-time serial number.
  • For clarity, the descriptions of the Calc functions within these wiki pages use the standard ISO 8601 format for date and time because this should be independent of your selected locale settings. The default date format on your computer may be different. When entering dates as part of formulas, slashes or dashes used as date separators may be interpreted as arithmetic operators. Therefore, dates entered in this format are not recognized as dates and result in erroneous calculations. To keep dates from being interpreted as parts of formulas either use the DATE function or place the date in quotation marks and use the ISO 8601 notation. Avoid using locale dependent date formats which may produce errors if the document is loaded under different locale settings.
  • Time zone information is not used by Calc’s Date & Time functions.
  • If you only wish to enter two digits of the year (for example 21 instead of 2021), Calc needs to know whether you mean 2021 or 1921. Go to Tools > Options > LibreOffice > General to view or adjust the range of years which Calc will use to interpret two-digit year values.
  • Calc contains logic to decide how to treat text when encountered as an operand in an arithmetic operation or as an argument to a function that expects a number instead. In this context, unambiguous conversion is possible for ISO 8601 dates and times in their extended formats with separators. For example, the simple formula =1 + "2021-02-08" will usually give the result 2021-02-09 (when formatted as a date). However, this logic may be affected by the settings on the Detailed Calculation Settings dialog, accessed by selecting Tools > Options > LibreOffice Calc > Formula and pressing the Details button in the Detailed Calculation Settings area. If a #VALUE! error occurs, it may be because the Generate #VALUE! error option is selected, in which case you should experiment with one of the other self-explanatory options in the Conversion from text to number drop-down.

Examples:

Formula Description Returns
=NETWORKDAYS("2021-02-18"; "2021-02-19") Here the function returns 2 workdays, based on the start and end dates given, no holidays, and the default five-day workweek. This simple example shows the inclusive nature of the count. 2
=NETWORKDAYS("2020-12-31"; "2020-01-01") Here the function returns -262 workdays in 2020, based on the start and end dates given, no holidays, and the default five-day workweek. The negative value reflects that the StartDate argument is later than the EndDate argument. -262
=NETWORKDAYS("2020-01-01"; "2020-12-31"; {"2020-01-01", "2020-04-10", "2020-04-13", "2020-05-08", "2020-05-25", "2020-08-31", "2020-12-25", "2020-12-28"}) Here the function returns 254 workdays in 2020, based on the start and end dates given, eight specified holiday dates, and the default five-day workweek. 254
=NETWORKDAYS(B2; B3; E3:E10; H2:H8) where cell B2 contains the date 2020-01-01; cell B3 contains the date 2020-12-31; cells E3 to E10 contain the holiday dates used in the previous example; cells H2 to H8 contain the values 1, 0, 0, 0, 0, 0, 1 (equivalent to the default five-day workweek). Here the function again returns 254 workdays in 2020, as in the previous example. 254
=NETWORKDAYS("2020-01-01"; "2020-12-31";; {1;0;0;0;0;1;1}) Here the function returns 210 workdays in 2020, based on the start and end dates given, no holidays, and a four-day workweek (Monday to Thursday). Note that an extra separator is included to indicate that the Holidays argument has been omitted. 210
=NETWORKDAYS(43831; 43861; {43845; 43852}; {1;1;0;0;0;1;1}) 43831, 43861, 43845, and 43852 are the date-time serial numbers for the dates 2020-01-01, 2020-01-31, 2020-01-15, and 2020-01-22 respectively. Here the function returns 12 workdays in January 2020, based on the start and end dates given, two holidays within the period, and a three-day workweek (Tuesday, Wednesday, and Thursday). 12

Related LibreOffice functions:

NETWORKDAYS.INTL

NETWORKDAYS_EXCEL2003

ODF standard:

Section 6.10.14, part 2

Equivalent Excel functions:

None.