A business day is any weekday, Monday to Friday; weekends don't count. This calculator walks every day from your start to end date and tallies just the weekdays, counting both ends inclusively. It also shows the total calendar days, how many were weekend days, and the number of full weeks. Working-day counts give realistic timelines for deliveries, payment terms and deadlines, since most organizations run Monday to Friday.
Reviewed: June 20, 2026 · Author: Naveen P N, Founder — AI Calculator · Verified against: day-by-day weekday counting, recomputed in code. Excludes public holidays.
How the count works
Counting is simplest one day at a time: step from the start date to the end date and add one each time the day is a weekday. Weekends (Saturday and Sunday) are skipped. Because every seven-day stretch contains exactly five weekdays, longer spans average five business days per week. Holidays aren't removed automatically, so subtract any that fall on a weekday in your window.
Worked example — June 2026
Scenario: from Monday 1 June 2026 to Tuesday 30 June 2026.
June 2026 has 22 business days out of 30 calendar days, with 8 weekend days. A shorter span like 27 June to 10 July 2026 works out to 10 business days. Note these are weekday counts only — if a public holiday such as a national day lands on a weekday inside the range, subtract it to get true working days.
Frequently Asked Questions
Any weekday, Monday–Friday. Saturdays and Sundays are excluded. Banks and couriers usually run on business days only.
Count only the weekdays from start to end, inclusive. 1–30 June 2026 = 22 business days of 30 calendar days.
No — only weekends are removed. Subtract any public holidays that land on a weekday in your range yourself.
Yes. Both endpoints count if they're weekdays. Mon→Fri = 5 business days. For an exclusive gap, subtract one.
Shipping windows, net-30 payment terms, SLAs, project plans and notice periods — anywhere a Mon–Fri week applies.