Business Days Calculator
Count weekdays from the start date through the end date, including both endpoints.
01 / inputs
YYYY-MM-DD
YYYY-MM-DD
02 / result
BUSINESS DAYS
5
- Business days
- 5
- Counting rule
- Mon–Fri, inclusive
Calculation trace
- 2026-01-05 through 2026-01-09, inclusive = 5 business days5 daysWeekdays in range
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SOURCES
- International Organization for Standardization (ISO)ISO 8601 — Date and time format ↗
Calendar dates and the ISO week; counts weekdays and excludes Saturday and Sunday (not public holidays)
Accessed 2026-08-19