Business Days Calculator
Calculate business days between dates, add or subtract business days from any date. Automatically excludes weekends and optionally US federal holidays.
Business Days Calculator
How to Use the Business Days Calculator
- Select Calculation Type: Choose between counting days between dates, adding days, or subtracting days
- Enter Dates: Input start and end dates, or the date you want to add/subtract from
- Specify Days: For add/subtract calculations, enter the number of business days
- Holiday Option: Check to exclude US federal holidays from the calculation
- View Results: See the result with a detailed breakdown of total days, business days, weekends, and holidays
Common Business Day Applications
Contract Deadlines
Many contracts specify business days for notice periods, payment terms, or response deadlines. "30 business days notice" means 30 weekdays, typically 6 weeks on the calendar. Always exclude weekends and check if holidays count.
Shipping and Delivery
"3-5 business days shipping" means weekdays only. Order Friday and expect delivery Wednesday-Friday the following week. International shipments may use different holiday calendars, so confirm which country's business days apply.
Banking and Finance
Bank transfers, check clearing, and loan processing use business days. Deposits made after cutoff times or on weekends process the next business day. Factor in bank holidays when timing large transactions or bill payments.
Project Planning
Calculate project timelines excluding weekends and holidays for realistic schedules. A 20 business day project spans about 4 calendar weeks. Account for team vacations and company-specific holidays in your planning.
International Business Days
Business day definitions vary globally. While Monday-Friday is standard in most countries, some regions observe different weekend patterns or have unique holiday calendars. Always clarify which country's business days apply in international agreements.
Middle East
Sunday-Thursday workweek in many countries, Friday-Saturday weekends
India
Some businesses have half-day Saturdays, unique festival holidays
Europe
Country-specific bank holidays, longer vacation periods in summer
Related Calculators
Frequently Asked Questions
What are business days?
Business days are weekdays (Monday through Friday) excluding weekends (Saturday and Sunday) and optionally federal holidays.
Which holidays are excluded?
When enabled, the calculator excludes major US federal holidays including New Year's Day, Independence Day, Thanksgiving, Christmas Day, and others.
How accurate are the calculations?
The calculator is 100% accurate for date calculations. It properly handles leap years, month boundaries, and holiday dates.