Business days vs calendar days
Business days count only Monday through Friday, excluding weekends — commonly used for shipping estimates, contract deadlines, and work-related timelines. This calculator doesn't account for public holidays, which vary by country and region.
Inclusive vs exclusive counting
By default, this shows the pure difference between two dates (exclusive). Checking "include both start and end day" adds 1 to the total — useful for questions like "how many days am I traveling" where both the departure and return day count as full days.
Frequently asked questions
Does this account for public holidays? No — business day counts here are based purely on weekdays (Mon-Fri). For holiday-adjusted business days, you'll need to manually subtract known holidays in your range.
Can I use this for age calculation instead? For precise year/month/day age breakdowns, use our Age Calculator, which handles calendar-based age differently than a raw day count.