The Excel NETWORKDAYS Function

Related Functions:

Basic Description

The Excel Networkdays function calculates the number of work days between two supplied dates (including the start and end date). The calculation includes all weekdays (Mon - Fri), excluding a supplied list of holidays.

The syntax of the function is:

NETWORKDAYS( start_date, end_date, [holidays] )

where the arguments are as follows:


The start date, from which to count the number of workdays.

(The start_date is counted in the returned number of days).

The end date, to count the number of workdays up to.

(The end_date is counted in the returned number of days).
[holidays]-An optional argument, which specifies an array of dates (in addition to weekends) that are not to be counted as working days.

Note that the start_date, end_date and [holidays] arguments should be input as either:


If you attempt to input Excel date arguments as text, Excel may misinterpret them, depending on the date system, or date interpretation settings on your computer.

Networkdays Function Examples

The spreadsheet below provides two examples of the Excel Networkdays function, used to calculate the number of work days between the two dates 01-Dec-2010 and 05-Jan-2011.

One of the examples (in cell A8) ignores holidays (other than weekends), while the second example (in cell A9) provides a list of holidays to be excluded from the day count in the calculation.

Examples of use of the Excel Networkdays Function
Excel Networkdays Function Results

In the above spreadsheet:

Further examples of the Excel Networkdays function are provided on the Microsoft Office website.

Networkdays Function Errors

If you get an error from the Excel Networkdays function this is likely to be the #VALUE! error:

Common Errors
#VALUE!-Occurs if any of the supplied arguments are not valid dates.