The Formula for Working Days
To find net working days, start with the total calendar days between two dates, calculate the number of weekend days that fall within that span, and subtract any official non-working holidays that fall on weekdays.
Non-Standard Work Weeks
Not every enterprise adheres to the classic Monday–Friday work week. Some regions observe Friday–Saturday weekends, while retail and healthcare operations often utilize 6-day or shift-based work schedules. A reliable business day calculator allows flexible toggling of non-working days.
Automating with Excel or Sheets
In spreadsheet applications, the NETWORKDAYS(start_date, end_date, [holidays]) function computes standard working days, while NETWORKDAYS.INTL provides customization for regional weekend patterns.