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Tool: Business Days Calculator — Working Days & Federal Holidays (2026) | Printed on:
Business Days Calculator — Working Days & Federal Holidays (2026)
Count working days, exclude weekends, and filter official US federal holidays.
Business Day Calendar & Range
Business Days Algorithm
Transparent mathematical methodology explained in plain English.
Business Days = Total Calendar Days - (Weekend Days + Recognized Observed Holidays) Iterates through the date range and excludes non-working calendar days according to weekend settings and official statutory holiday calendars.
Variables Explained:
- Start/End Date: Calendar interval boundaries.
- Weekend Exclusions: Saturdays and Sundays.
- Holidays: Observed federal and bank holidays.
45 Calendar Days Starting Today
Evaluating working days and standard billable hours.
- Total calendar span: 45 days.
- Weekend days (Saturdays + Sundays): 12 days.
- Recognized Federal Holidays: 1 day.
- Net business days: 45 - 12 - 1 = 32 business days.
- Standard work hours (8h/day): 32 × 8 = 256 hours.
Frequently Asked Questions: Business Days Calculator
Click any question below to expand quick answers, formulas, and expert tips.
How do I calculate the number of business days between two dates?
Count the total calendar days between start and end dates, then subtract all weekend days (Saturdays and Sundays) and any recognized federal or company holidays within that period.
Which US federal holidays are excluded in business day calculations?
Our calculator recognizes official US statutory holidays: New Year's Day, MLK Day, Washington's Birthday (Presidents Day), Memorial Day, Juneteenth, Independence Day, Labor Day, Columbus Day, Veterans Day, Thanksgiving Day, and Christmas Day.
What happens when a federal holiday falls on a Saturday or Sunday?
Under federal guidelines, if a statutory holiday falls on a Saturday, it is officially observed on the preceding Friday. If it falls on a Sunday, it is observed on the following Monday.
How do I add X business days to a specific starting date?
Starting from your chosen date, step forward day by day, counting only weekdays (Monday through Friday) while skipping weekends and observed holidays until your target count is reached.
How many standard working days are in a typical calendar year?
A standard 365-day year contains 260 weekdays (52 weeks × 5 days). Subtracting 10 to 11 official US federal holidays leaves approximately 249 to 250 net working days.
How many billable working hours are in a month or year?
A standard full-time work year (2,080 gross hours based on 40 hours/week) yields approximately 1,992 to 2,000 net working hours after accounting for 11 federal holidays.
Can I customize which days of the week count as weekends?
Yes. While Monday through Friday is standard in the US, Europe, and Americas, you can toggle individual weekdays or weekend days to match international workweeks (such as Sunday–Thursday in certain Middle Eastern countries).
Are banking business days different from shipping business days?
Commercial shipping carriers (USPS, FedEx, UPS) frequently deliver on Saturdays or operate during select bank holidays (such as Columbus Day or Veterans Day) when the Federal Reserve and banking institutions are closed.