Enter the start date for your calculation.
Enter the end date for your calculation.
Check this box if you want to include holidays in your calculation.
Enter the start date for your calculation.
Enter the number of working days for your calculation.
Check this box if you want to include holidays in your calculation.

## What is a Working Days Calculator?

A working days calculator is a tool that helps you determine the number of working days between two dates. This calculator not only considers weekdays from Monday to Friday but also accounts for holidays if the user chooses to include them. It's an excellent tool for project planning, estimating delivery times, or calculating employee leave.

### How does the Working Days Calculator work?

The calculation is relatively straightforward. Given a start and an end date, the calculator iterates over each day within this range. It counts a day as a working day if it's a weekday (Monday through Friday). If the "Include Holidays" option is selected, the calculator also checks if the day is a listed holiday and, if so, does not count it as a working day.

### Mathematical Formula

Although the process of counting working days seems more like an algorithm than a formula, you could theoretically express it in mathematical terms. If "D" represents the total number of days between the start and end date, "W" is the number of weekends, and "H" is the number of holidays, the formula would look something like this:

`Working Days = D - W - H`

### How to use the Working Days Calculator?

Using the Working Days Calculator is simple. In the "Start Date" field, select the date you wish to start counting from. Then select the end date in the "End Date" field. If you want to include holidays in the calculation, check the box labelled "Include Holidays". Click "Calculate", and the calculator will display the number of working days within your specified range.

### How to calculate working days in Excel?

You can also calculate working days in Excel using the "NETWORKDAYS" function. This function returns the number of whole working days between a start date and end date. Weekends (Saturday and Sunday) and any dates identified as holidays are excluded. Here's how you use it:

1. Enter your start date in one cell (e.g., A2).
2. Enter your end date in another cell (e.g., B2).
3. In a new cell, type `=NETWORKDAYS(A2, B2)` and press Enter.
4. Excel will calculate the number of working days between the two dates, excluding weekends.

To include holidays, you need to list them in separate cells and include the range in the function, like this: `=NETWORKDAYS(A2, B2, C2:C4)`, assuming C2:C4 contains your holiday dates.

##### How does the Working Days Calculator calculate the number of days?

It iterates through each day between the start and end date, counting only weekdays as working days. If "Include Holidays" is checked, it won't count the specified holidays as working days.

##### What are considered as holidays in the Working Days Calculator?

Holidays can be defined by the user. If the "Include Holidays" option is checked, the specified dates will be excluded from the count of working days.

##### Can I calculate the end date given the start date and number of working days?

Yes, you can. Just enter the start date and the number of working days, and the calculator will provide the corresponding end date.

##### How can I calculate working days in Excel?

You can use the NETWORKDAYS function in Excel to calculate working days. NETWORKDAYS takes a start date, end date, and optionally a range of dates to consider as holidays.

##### Why is the Working Days Calculator useful?

The Working Days Calculator is useful for project planning, estimating delivery times, or calculating employee leave. It helps to get a precise number of working days for better planning.