Excel Weekday Calculator

Calculate the exact number of weekdays between any two dates in Excel with our interactive tool

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Total weekdays between and

Complete Guide: How to Calculate Weekdays Between Two Dates in Excel

Calculating the number of weekdays (Monday through Friday) between two dates is a common business requirement for project planning, payroll processing, and deadline calculations. While Excel provides several functions to work with dates, determining the exact count of weekdays requires understanding how to exclude weekends and optionally holidays.

Why Calculate Weekdays Instead of Total Days?

Most business operations run on weekdays, making it essential to:

Calculate accurate project timelines excluding weekends
Determine payroll periods for salaried employees
Set realistic deadlines for client deliverables
Plan resource allocation for business days only
Compute service level agreements (SLAs) that exclude non-business days

Excel Functions for Weekday Calculations

1. NETWORKDAYS Function (Basic Weekday Count)

The NETWORKDAYS function is the simplest way to calculate weekdays between two dates:

=NETWORKDAYS(start_date, end_date, [holidays])

Where:

start_date: The beginning date of your period
end_date: The ending date of your period
[holidays]: (Optional) A range of dates to exclude from the calculation

Example: To calculate weekdays between January 1, 2023 and January 31, 2023:

=NETWORKDAYS("1/1/2023", "1/31/2023")

This returns 21 weekdays (excluding weekends but not holidays).

2. NETWORKDAYS.INTL Function (Custom Weekend Days)

For organizations with non-standard weekends (e.g., Friday-Saturday in some Middle Eastern countries), use NETWORKDAYS.INTL:

=NETWORKDAYS.INTL(start_date, end_date, [weekend], [holidays])

The [weekend] parameter accepts:

1: Saturday-Sunday (default)
2: Sunday-Monday
3: Monday-Tuesday
…
11: Sunday only
12: Monday only
13: Tuesday only
14: Wednesday only
15: Thursday only
16: Friday only
17: Saturday only

Example: For a Friday-Saturday weekend:

=NETWORKDAYS.INTL("1/1/2023", "1/31/2023", 7)

3. Manual Calculation Using WEEKDAY Function

For complete control, you can manually calculate weekdays:

=SUMPRODUCT(--(WEEKDAY(ROW(INDIRECT(start_date&":"&end_date)))<>{6,7})))

This complex formula:

Creates an array of all dates between the range
Uses WEEKDAY to determine the day number (1=Sunday through 7=Saturday)
Excludes days where WEEKDAY equals 6 (Saturday) or 7 (Sunday)
Counts the remaining days

Handling Holidays in Your Calculations

To exclude holidays from your weekday count:

Create a list of holiday dates in your worksheet
Reference this range in the [holidays] parameter of NETWORKDAYS

Example: If your holidays are listed in cells A2:A10:

=NETWORKDAYS("1/1/2023", "1/31/2023", A2:A10)

Common US Holidays to Consider

For US-based calculations, these federal holidays typically need exclusion:

Holiday	2023 Date	2024 Date	2025 Date
New Year’s Day	1/2/2023 (observed)	1/1/2024	1/1/2025
Martin Luther King Jr. Day	1/16/2023	1/15/2024	1/20/2025
Presidents’ Day	2/20/2023	2/19/2024	2/17/2025
Memorial Day	5/29/2023	5/27/2024	5/26/2025
Juneteenth	6/19/2023	6/19/2024	6/19/2025
Independence Day	7/4/2023	7/4/2024	7/4/2025
Labor Day	9/4/2023	9/2/2024	9/1/2025
Columbus Day	10/9/2023	10/14/2024	10/13/2025
Veterans Day	11/11/2023	11/11/2024	11/11/2025
Thanksgiving Day	11/23/2023	11/28/2024	11/27/2025
Christmas Day	12/25/2023	12/25/2024	12/25/2025

Advanced Techniques for Weekday Calculations

1. Dynamic Holiday Lists

Create a dynamic holiday list that automatically updates yearly:

List all fixed-date holidays (e.g., Christmas is always December 25)
Use formulas to calculate variable-date holidays:

    =DATE(YEAR,7,4)  'Independence Day (fixed)
    =DATE(YEAR,1,1+(WEEKDAY(DATE(YEAR,1,1))+5) MOD 7)  'New Year's Day (observed)

2. Conditional Formatting for Weekdays

Visually distinguish weekdays in your date ranges:

Select your date range
Go to Home > Conditional Formatting > New Rule
Use formula: =WEEKDAY(A1,2)<6
Set your preferred formatting for weekdays

3. Creating a Weekday Counter with VBA

For complex scenarios, create a custom VBA function:

    Function COUNTWEEKDAYS(start_date As Date, end_date As Date, _
    Optional holidays As Range) As Long
        Dim dayCount As Long
        Dim currentDay As Date
        Dim isHoliday As Boolean

        dayCount = 0
        For currentDay = start_date To end_date
            If Weekday(currentDay, vbMonday) < 6 Then
                isHoliday = False
                If Not holidays Is Nothing Then
                    For Each cell In holidays
                        If cell.Value = currentDay Then
                            isHoliday = True
                            Exit For
                        End If
                    Next cell
                End If
                If Not isHoliday Then dayCount = dayCount + 1
            End If
        Next currentDay

        COUNTWEEKDAYS = dayCount
    End Function

Use in your worksheet as: =COUNTWEEKDAYS(A1,B1,C2:C10)

Common Errors and Troubleshooting

Error	Cause	Solution
#NAME?	Misspelled function name	Check for typos in NETWORKDAYS or NETWORKDAYS.INTL
#VALUE!	Invalid date format	Ensure dates are proper Excel dates (not text)
Incorrect count	Start date after end date	Verify date order (start ≤ end)
Holidays not excluded	Holiday range not properly referenced	Check that holiday range contains valid dates
#NUM!	Non-numeric value in date	Convert text to dates using DATEVALUE()

Real-World Applications

1. Project Management

Calculate realistic project timelines by:

Entering task start and end dates
Using NETWORKDAYS to determine actual working days
Adding buffers for unexpected delays

2. Payroll Processing

Ensure accurate salary calculations by:

Counting exact pay periods (typically bi-weekly)
Excluding weekends and company holidays
Verifying against timesheet data

3. Service Level Agreements

Meet contractual obligations by:

Calculating response times in business days
Excluding weekends and holidays from SLAs
Providing clients with accurate delivery estimates

Excel vs. Other Tools for Weekday Calculations

Tool	Pros	Cons	Best For
Excel	Built-in functions (NETWORKDAYS) Highly customizable Integrates with other data	Requires formula knowledge Manual holiday entry	Business users, accountants, project managers
Google Sheets	Same functions as Excel Cloud-based collaboration Free to use	Limited offline functionality Fewer advanced features	Collaborative teams, remote workers
Python (pandas)	Highly powerful for large datasets Automatable Precise date handling	Requires programming knowledge Not spreadsheet-based	Data scientists, developers, large-scale analysis
Online Calculators	No installation required Simple interface Often free	Limited customization Data privacy concerns No integration with other tools	Quick one-off calculations, non-technical users

Authoritative Resources

U.S. Federal Holidays - USA.gov Microsoft NETWORKDAYS Function Documentation Bureau of Labor Statistics: Work Schedules and Work at Home (Archived)

Best Practices for Accurate Weekday Calculations

Always verify date formats: Ensure Excel recognizes your dates as dates (right-aligned in cells) not text (left-aligned)
Double-check holiday lists: Maintain an up-to-date list of company and federal holidays
Consider international differences: Weekend days vary by country (e.g., Friday-Saturday in some Middle Eastern countries)
Document your formulas: Add comments or cell notes explaining complex calculations
Test with known values: Verify your formula with manual calculations for short date ranges
Account for time zones: If working with international teams, clarify which time zone dates reference
Handle leap years properly: February 29 can affect calculations in leap years
Consider partial days: Decide whether to count start/end dates as full days or not

Frequently Asked Questions

Q: Does NETWORKDAYS include the start and end dates in the count?

A: Yes, NETWORKDAYS includes both the start and end dates in its calculation if they fall on weekdays.

Q: How do I calculate weekdays between two dates excluding both the start and end dates?

A: Use this adjusted formula:

=MAX(0,NETWORKDAYS(start_date+1,end_date-1,holidays))

Q: Can I calculate weekdays for dates in different years?

A: Yes, NETWORKDAYS works perfectly across year boundaries, automatically accounting for year changes in its calculation.

Q: How do I handle dates that might be text strings?

A: Use the DATEVALUE function to convert text to dates:

=NETWORKDAYS(DATEVALUE("1/1/2023"), DATEVALUE("1/31/2023"))

Q: Is there a way to visualize weekday counts in Excel?

A: Yes, you can create a simple bar chart:

Create a table with date ranges and their weekday counts
Select your data and insert a clustered column chart
Format the chart to clearly show the comparison

Conclusion

Mastering weekday calculations in Excel is an essential skill for professionals across finance, project management, human resources, and operations. By understanding the NETWORKDAYS function and its variations, you can accurately determine business days between any two dates, account for holidays, and even handle international weekend conventions.

Remember that while Excel provides powerful built-in functions, the accuracy of your results depends on:

Proper date formatting
Complete holiday lists
Correct function parameters
Thorough testing of your calculations

For most business applications, the NETWORKDAYS function will meet your needs. For more complex scenarios, consider combining it with other Excel functions or exploring VBA solutions. The interactive calculator at the top of this page provides a quick way to verify your Excel calculations or perform one-off weekday counts without building spreadsheets.

Calculate How Many Weekdays Between Two Dates In Excel