📝 What Is Working Days Calculator?
A Working Days Calculator is a simple online tool that counts the number of weekdays (Monday through Friday) between any two given dates. It automatically excludes Saturdays and Sundays, giving you a precise count of business or school days without manual counting. This matters because planning projects, tracking payroll, scheduling deliveries, or estimating study time often relies on working days rather than calendar days. Using this tool eliminates guesswork and errors, saving you time and ensuring accuracy for deadlines, invoices, or personal planning. It's especially useful for professionals, freelancers, students, and anyone managing time-sensitive tasks that only count weekdays.
🧮 Formula
The calculator uses a straightforward formula: Total Working Days = (Number of whole weeks between the dates × 5) + Weekdays in the partial first week + Weekdays in the partial last week. It starts by finding the total calendar days, then divides that into full 7-day weeks (each contributing 5 weekdays) and leftover days. The leftover days are adjusted by checking what day of the week the start and end dates fall on, adding only the weekdays from those remainders. The resulting count is inclusive of both the start and end dates if they are weekdays.
💡 Tips for Best Results
✨📅 Double-check whether your calculation should include the start and end dates or exclude one — our tool includes both if they are weekdays.
✨🗓️ For project planning, use this calculator to quickly estimate how many workdays are available before a deadline, then subtract any known holidays.
✨⚡ If you need to exclude public holidays, manually note them and subtract that number from the result (many tools offer holiday exclusions as an upgrade).
✨🔄 Try calculating backwards: pick a target end date and a desired number of working days to find the ideal start date for your timeline.
❓ Frequently Asked Questions
Does the Working Days Calculator count both the start and end dates?
Yes, by default the calculator includes both the start and end dates in the total if they fall on a weekday (Monday–Friday). If you need to exclude one of them, simply adjust your date range accordingly.
Can this tool account for public holidays or company-specific non-working days?
No, the basic calculator only removes Saturdays and Sundays. For a more precise result, you would need to manually subtract any holidays that fall on weekdays, or use a specialized business day calculator that supports holiday lists.
What happens if I enter dates in the wrong order (end date before start date)?
The calculator will still work but will treat the earlier date as the start and the later date as the end, returning a positive number of working days. For best accuracy, always enter the start date first and the end date second.