Calculate Business Days in Excel

Introduction to Calculating Business Days in Excel

Calculating business days in Excel can be a complex task, especially when you need to exclude weekends and holidays. However, with the use of certain formulas and functions, you can easily determine the number of business days between two dates. In this article, we will discuss the different methods of calculating business days in Excel, including the use of the NETWORKDAYS and NETWORKDAYS.INTL functions.

Understanding the NETWORKDAYS Function

The NETWORKDAYS function is a built-in Excel function that calculates the number of working days between two dates, excluding weekends and holidays. The syntax for the NETWORKDAYS function is: NETWORKDAYS(start_date, end_date, [holidays]) Where: - start_date is the start date of the period - end_date is the end date of the period - [holidays] is an optional range of holidays to exclude

Using the NETWORKDAYS Function

To use the NETWORKDAYS function, follow these steps: - Enter the start date in one cell - Enter the end date in another cell - Enter the holidays in a range of cells - Use the NETWORKDAYS function to calculate the number of business days For example:

Start Date	End Date	Holidays	Business Days
2022-01-01	2022-01-31	2022-01-01, 2022-01-17	=NETWORKDAYS(A2, B2, C2:C3)

Understanding the NETWORKDAYS.INTL Function

The NETWORKDAYS.INTL function is an updated version of the NETWORKDAYS function that allows you to specify the weekend days to exclude. The syntax for the NETWORKDAYS.INTL function is: NETWORKDAYS.INTL(start_date, end_date, [weekend], [holidays]) Where: - start_date is the start date of the period - end_date is the end date of the period - [weekend] is a number that specifies the weekend days to exclude - [holidays] is an optional range of holidays to exclude

Using the NETWORKDAYS.INTL Function

To use the NETWORKDAYS.INTL function, follow these steps: - Enter the start date in one cell - Enter the end date in another cell - Enter the weekend days to exclude (1 = Saturday and Sunday, 2 = Sunday and Monday, etc.) - Enter the holidays in a range of cells - Use the NETWORKDAYS.INTL function to calculate the number of business days For example:

Start Date	End Date	Weekend Days	Holidays	Business Days
2022-01-01	2022-01-31	1	2022-01-01, 2022-01-17	=NETWORKDAYS.INTL(A2, B2, C2, D2:D3)

📝 Note: The NETWORKDAYS and NETWORKDAYS.INTL functions are only available in Excel 2007 and later versions.

Calculating Business Days using VBA

If you need to calculate business days in an earlier version of Excel, you can use VBA (Visual Basic for Applications) to create a custom function. Here is an example of a VBA function that calculates business days: Function BusinessDays(start_date As Date, end_date As Date) As Long Dim i As Long Dim count As Long count = 0 For i = start_date To end_date If Weekday(i) <> 1 And Weekday(i) <> 7 Then count = count + 1 End If Next i BusinessDays = count End Function This function uses a loop to iterate through each day between the start and end dates, and increments a counter if the day is not a weekend.

Conclusion

Calculating business days in Excel can be a complex task, but with the use of the NETWORKDAYS and NETWORKDAYS.INTL functions, you can easily determine the number of business days between two dates. Alternatively, you can use VBA to create a custom function to calculate business days in earlier versions of Excel. By following the steps outlined in this article, you can accurately calculate business days and improve your productivity.