Count business days, not just calendar days
Deadlines, delivery estimates, notice periods, and payroll are usually measured in working days rather than plain calendar days, because weekends do not count. This calculator counts the Monday-to-Friday days between two dates, so you can plan around a realistic timeline instead of an optimistic one.
How to use the calculator
Enter a start date and an end date. Both dates are included in the count, and the order does not matter. You get the number of working days, the total calendar days, and how many of those were weekend days.
How the count works
The calculator steps through every date in the range and counts only those that fall on a weekday (Monday to Friday), skipping Saturdays and Sundays. Over a full year this gives about 261 working days — 365 days minus roughly 104 weekend days.
Remember public holidays
The one thing an automatic count cannot know is your local public holidays, which vary by country and even by state or region. For an accurate project or delivery timeline, take the working-day figure here and subtract any public holidays that fall within the range. After allowing for public holidays and typical annual leave, most full-time roles work closer to 230 productive days a year than the theoretical 261 — a useful reality check when you are planning capacity or a project schedule.