Business Days Calculator

Calculate business days between dates, excluding weekends and holidays. Perfect for project planning, contract terms, and deadline calculations.

Start Date

End Date

Calculation Type

Business Days to Add/Subtract

Exclude Weekends (Saturday & Sunday) Exclude US Federal Holidays Exclude Custom Holidays

Custom Holidays (MM/DD format, one per line)

About Business Days

Standard Definition: Monday through Friday, excluding holidays

Weekends: Saturday and Sunday are typically excluded

Holidays: Federal, state, and company holidays are excluded

Custom Rules: Can be adjusted for specific business needs

New Year's Day: January 1st

Independence Day: July 4th

Christmas Day: December 25th

Other Holidays: Memorial Day, Labor Day, Thanksgiving, etc.

Calculate project timelines and delivery dates

Determine payment terms and service delivery

Calculate filing deadlines and response times