Calculating Weekdays In Excel

Calculate the number of weekdays between two dates, similar to Excel’s NETWORKDAYS function, optionally excluding a list of holidays. This tool for calculating weekdays in excel is perfect for project planning and scheduling.

Calculate Weekdays

Holiday Date	Falls on Weekday?

Table: List of holidays provided and whether they fall on a weekday within the range.

What is Calculating Weekdays in Excel?

Calculating weekdays in excel involves determining the number of business days (typically Monday to Friday) between two specific dates. This is a common requirement in project management, finance, HR, and scheduling to figure out work duration, deadlines, or pay periods, excluding weekends and often public holidays. Excel provides built-in functions like `NETWORKDAYS` and `NETWORKDAYS.INTL` specifically for calculating weekdays in excel.

Anyone who needs to plan or track time based on working days rather than total calendar days should use tools or functions for calculating weekdays in excel. This includes project managers, HR professionals, financial analysts, and anyone scheduling tasks or appointments.

A common misconception is that you can simply subtract the start date from the end date and multiply by 5/7. This doesn’t account for which day of the week the period starts or ends on, nor does it easily integrate holidays. That’s why dedicated functions or calculators for calculating weekdays in excel are more accurate.

Calculating Weekdays in Excel: Formula and Explanation

Excel’s primary function for calculating weekdays in excel is `NETWORKDAYS(start_date, end_date, [holidays])`.

• start_date: The starting date of the period.
• end_date: The ending date of the period (inclusive).
• [holidays] (Optional): A range of cells or a list of dates to be excluded as holidays.

The function counts the number of whole weekdays between the start and end dates, inclusive, and subtracts any holidays that fall on a weekday within that period.

Mathematically, the process involves:

1. Finding the total number of days between the start and end dates.
2. Identifying how many of these days are Saturdays or Sundays.
3. Identifying which of the provided holidays fall on weekdays (Monday-Friday) within the date range.
4. Subtracting the weekend days and the weekdays that are holidays from the total days.

This calculator emulates the `NETWORKDAYS` function for calculating weekdays in excel by iterating through each day from the start to the end date and checking if it’s a weekday and not a holiday.

Variable	Meaning	Unit	Typical Range
start_date	The beginning date	Date	Any valid date
end_date	The ending date (inclusive)	Date	Any valid date after or on start_date
holidays	A list of dates to exclude	Date(s)	Optional list of valid dates

Variables used in calculating weekdays in Excel.

Practical Examples of Calculating Weekdays in Excel

Example 1: Project Timeline

A project starts on 2024-03-04 (Monday) and is due on 2024-03-22 (Friday). There is one holiday on 2024-03-15 (Friday).

• Start Date: 2024-03-04
• End Date: 2024-03-22
• Holidays: 2024-03-15

Using the calculator or `NETWORKDAYS(“2024-03-04”, “2024-03-22”, “2024-03-15”)`, we find there are 14 working days. There are 19 total days, 4 weekend days (Mar 9, 10, 16, 17) and 1 holiday on a weekday.

Example 2: Payroll Period

A bi-weekly payroll period runs from 2024-04-01 to 2024-04-14, with no holidays in this period.

• Start Date: 2024-04-01
• End Date: 2024-04-14
• Holidays: None

The number of weekdays is 10. Total days are 14, with 4 weekend days.

How to Use This Weekday Calculator

1. Enter the Start Date: Select the first date of your period using the date picker.
2. Enter the End Date: Select the last date of your period (inclusive).
3. Enter Holidays (Optional): If you have specific holidays you want to exclude, enter them one per line in the “Holidays” text area in YYYY-MM-DD format (e.g., 2024-07-04).
4. Calculate: Click the “Calculate” button or simply change the dates. The results will update automatically.
5. Read the Results:
   • Net Weekdays: The main result, showing the number of business days.
   • Total Days: The total calendar days between the start and end dates, inclusive.
   • Weekend Days: The number of Saturdays and Sundays in the period.
   • Holidays on Weekdays: How many of your listed holidays fell on a Monday-Friday within the range.
   • Excel Formula: The equivalent Excel `NETWORKDAYS` formula you could use.
6. Reset: Click “Reset” to clear the fields and start over with default dates.
7. Copy: Click “Copy Results” to copy the key numbers and formula to your clipboard.

Use the results for project planning, estimating work duration, or calculating pay based on working days. If you see fewer weekdays than expected, check your holiday list and the start/end dates for accuracy when calculating weekdays in excel.

Key Factors That Affect Weekday Calculation Results

• Start Date: The day the period begins influences the initial day of the week and the total count.
• End Date: The day the period ends determines the total duration and the final day of the week.
• Holidays: Specific dates excluded from the count if they fall on a weekday significantly reduce the net weekday count. Ensure the holiday dates are accurate and within the range if they are to be excluded when calculating weekdays in excel.
• Weekend Definition: This calculator, like Excel’s `NETWORKDAYS`, assumes Saturday and Sunday are weekends. For different weekend definitions, Excel’s `NETWORKDAYS.INTL` is used, though this calculator uses the standard Sat/Sun definition. Excel date functions like NETWORKDAYS.INTL offer more flexibility.
• Inclusivity of End Date: The calculator and `NETWORKDAYS` include both the start and end dates in the calculation. If you need to exclude the end date, adjust accordingly.
• Date Format: Ensure dates are entered and interpreted correctly (YYYY-MM-DD here) to avoid errors when calculating weekdays in excel. Our Excel formulas guide covers date formats.

Frequently Asked Questions (FAQ)

1. How does this calculator differ from just subtracting dates in Excel?

Subtracting dates gives you the total number of days. This calculator and `NETWORKDAYS` specifically count only weekdays (Mon-Fri) and can exclude holidays, giving you the number of working days when calculating weekdays in excel.

2. Does this calculator include the start and end dates?

Yes, both the start and end dates are included in the period when calculating the number of weekdays, similar to Excel’s `NETWORKDAYS`.

3. What format should I use for holidays?

Enter each holiday date on a new line in the YYYY-MM-DD format (e.g., 2024-12-25).

4. What if a holiday falls on a weekend?

If a holiday you list falls on a Saturday or Sunday, it won’t affect the weekday count because it’s already excluded as a weekend day.

5. Can I calculate weekdays excluding only Saturdays or only Sundays?

This calculator uses the standard Saturday and Sunday as weekends. Excel’s `NETWORKDAYS.INTL` function allows for custom weekend definitions, which is more advanced than what’s covered by this basic tool for calculating weekdays in excel. See more about the date and time functions in Excel.

6. How are partial days handled?

This calculator and `NETWORKDAYS` count whole days. If you are working with times, you’d need more complex calculations.

7. What if my start date is after my end date?

The calculator will likely show 0 or negative results and an error message, as the period is invalid for calculating weekdays in excel going forward.

8. Is there a limit to the number of holidays I can enter?

There’s no practical limit for this web calculator, but keep the list reasonable. For Excel’s `NETWORKDAYS`, the limit depends on memory and cell range capabilities. Managing a holiday calendar in Excel can be useful.