Working Days Calculator

Working days calculations are common for project deadlines, notice periods, delivery estimates, and payroll. This calculator counts Monday-to-Friday days in any date range. It does not exclude public holidays, so deduct those manually for your country and locale.

• Project deadlines: Determine how many business days are available to complete a task.
• Notice periods: Calculate when a notice period of 20 or 30 working days ends.
• Delivery lead times: Estimate delivery dates when suppliers quote in business days.
• Payroll: Count paid working days in a month for pro-rated salary calculations.

1. 1Enter a start date and end date.
2. 2The calculator steps through every calendar day in the range.
3. 3It counts days where day-of-week is Monday through Friday.
4. 4Saturday (day 6) and Sunday (day 0) are counted separately as weekend days.
5. 5Both start and end dates are included in the count.

• Forgetting to subtract public holidays: The calculator counts weekdays only. Public holidays are not removed automatically. Subtract them after getting the count for your country and region.
• Using calendar days instead of working days for deadlines: A 30-day contract clause and a 30-working-day clause end on very different dates. Check which the document specifies before calculating.
• Including the start date as a full day: Both start and end dates count if they fall on weekdays. If your deadline starts from the day after signing, shift the start date by one.
• Ignoring part-time or regional schedules: This calculator uses Monday-to-Friday. If your team works a four-day week or follows a different regional schedule, adjust the count manually.

• Check your jurisdiction's public holiday list: Most countries publish official public holiday calendars. Download the list for the current year, count how many fall in your date range, and subtract them from the working-day total.
• Use it to reverse-engineer a target date: If you need a date that is 20 working days from today, set today as start and shift the end date until the count hits 20. That end date is your deadline.
• Combine with the date-difference calculator: Use date-difference to get the full calendar-day count, then this calculator to get working days. The gap between the two tells you how many weekend days fall in the range.
• Add a buffer for team-specific days off: If your company observes extra holidays or office closures, subtract those from the total after running the calculator. Build this buffer into project timelines by default.