Work Days Calculator

Work Days Calculator

Business Days Between Two Dates

Please enter valid start and end dates (end must be after start).

Add Working Days to a Date

Please enter a valid date and number of days.

Work Days Calculator – Count Business Days Between Dates

Need to know exactly how many business days fall between two dates? Our work days calculator counts all working days (Monday through Friday), separates them from weekends, and lets you exclude public holidays of your choice. It also has an "add working days" mode — enter a start date and a number of business days, and get the exact end date.

What Counts as a Working Day?

In the standard Mon–Fri business week used across most of North America, Europe, and Asia, a working day is any day that is not a Saturday, Sunday, or recognized public holiday. Some industries (retail, healthcare, hospitality) may use different schedules, but for office work, finance, and legal deadlines, the Mon–Fri definition is the norm used by this calculator.

How to Exclude Public Holidays

Enter holiday dates in the textarea in YYYY-MM-DD format, one per line (e.g., 2025-01-01 for New Year's Day). The calculator will subtract these days from the working day count. Common public holidays to consider include New Year's Day, Easter Monday, Christmas Day, and Boxing Day. The specific holidays vary by country, so the tool lets you input whichever dates are relevant to your jurisdiction.

Project Planning Use Cases

Business day counting is critical for:

  • Legal deadlines: Court filings, contract notice periods, and statutory response windows are often expressed in business days.
  • Project management: Sprint planning and milestone scheduling in Agile typically count working days, not calendar days.
  • HR and payroll: Notice periods, probation lengths, and pay periods may be counted in working days.
  • Shipping and logistics: "3-5 business days" shipping estimates are standard in e-commerce.
  • Financial transactions: Settlement periods (e.g., T+2 for stock trades) count business days.

Adding Business Days to a Date

The second section of the tool answers questions like "What date is 10 business days from today?" This is particularly useful for calculating statutory deadlines, estimating delivery dates, or scheduling follow-ups. The calculator skips Saturdays and Sundays, counting forward only through weekdays until the specified number of working days is reached.

Frequently Asked Questions

Does the calculator include the start date in the count?
Yes. The count includes both the start date and the end date. So if you enter the same date for both start and end, the result is 1 day (assuming it is a weekday).
How many working days are in a typical month?
A typical month has about 20–23 working days, depending on how weekends fall and how many public holidays occur. Months like February with 28 days may have as few as 18 working days in some years.
Can I use this for legal "business days" deadlines?
This tool provides a reliable count of Mon–Fri weekdays, which matches the most common definition of "business days" in legal and commercial contexts. Always verify the specific definition used in your contract or jurisdiction, as some may define business days differently.
What date format should I use for holidays?
Enter holidays in ISO 8601 format: YYYY-MM-DD (e.g., 2025-12-25 for Christmas). One date per line. Incorrectly formatted lines are silently ignored, so double-check entries if a holiday is not being excluded.
Does it support countries where the work week is Saturday–Wednesday?
Currently the tool uses the Monday–Friday work week standard. Countries with different work weeks (e.g., Sunday–Thursday or Saturday–Wednesday) would need to adjust by treating the tool's "weekend days" as their off days. A custom work week selector may be added in a future update.