Count only business days (Monday through Friday) between two dates, excluding weekends.
This calculator counts each day between your start and end dates that falls on a Monday, Tuesday, Wednesday, Thursday, or Friday. Saturdays and Sundays are excluded. The start date is not counted but the end date is included.
Business days are the standard unit of time in professional and legal contexts. When a contract says "delivery within 10 business days," it means 10 weekdays, not 10 calendar days -- which could span 14 or more actual days depending on weekends. Understanding the distinction is critical for meeting deadlines, planning projects, estimating shipping times, and complying with legal requirements. Many government agencies, courts, and financial institutions operate exclusively on business day timelines.
In project management, business days are used to calculate work schedules, sprint durations, and delivery timelines. A "two-week sprint" in agile development is typically 10 business days. Construction projects, legal proceedings, insurance claims, and banking transactions all use business days as their time measurement. Tax filing deadlines, SEC reporting windows, and patent application periods are measured in business days or calendar days that adjust if the deadline falls on a weekend.
Shipping and logistics companies routinely quote delivery times in business days. "3-5 business days" for standard shipping means you should expect your package in 3-7 calendar days (if ordered on a Monday) or 5-9 calendar days (if ordered on a Wednesday). International shipments may add further complexity with different countries observing different weekends -- some Middle Eastern countries use Friday-Saturday as their weekend rather than Saturday-Sunday.
Business days are Monday through Friday, excluding Saturday and Sunday. In some contexts, federal holidays are also excluded, but this calculator counts all weekdays.
A typical year has approximately 260-262 business days (52 weeks x 5 days). After subtracting US federal holidays (typically 11), there are about 249-251 working days.
Most months have 20-23 business days. The average is about 21.7 business days per month (260 / 12). February typically has the fewest (20) and months with 31 days may have up to 23.
This calculator counts all weekdays (Monday-Friday) and does not exclude public holidays, since holidays vary by country, state, and organization. For a precise working day count, subtract your applicable holidays from the result.