Business Day Calculator
Calculate working days accurately by excluding weekends and federal holidays.
Result
Thursday, November 5, 2026
is 45 business days from Sep 1, 2026
Visual Timeline
Why use a Business Day Calculator?
Calculating deadlines and project timelines requires more than just counting days on a calendar. Standard calendar days often include weekends and public holidays, which can lead to missed deadlines and poor planning.
Our Business Day Calculator helps professional planning by:
- Excluding Saturdays and Sundays automatically.
- Skipping US Federal Holidays (like New Year's Day, Independence Day, Thanksgiving).
- Providing accurate dates for contract clauses (e.g., "within 10 business days").
- Visualizing the timeline to see exactly which days are counted.
Popular Calculations
Jump start your calculation with these popular presets:
Frequently Asked Questions
What are business days?
Business days (also called working days) are weekdays when most businesses operate. In the US, this typically means Monday through Friday, excluding federal holidays.
How many business days are in a week?
There are typically 5 business days in a week (Monday through Friday). However, if a federal holiday falls on a weekday, that week will have only 4 business days.
How many business days are in a month?
On average, there are about 20-22 business days in a month. The exact number depends on how weekends and holidays fall within that specific month.
Which holidays does this calculator exclude?
This calculator excludes all 11 US federal holidays: New Year's Day, MLK Jr. Day, Presidents' Day, Memorial Day, Juneteenth, Independence Day, Labor Day, Columbus Day, Veterans Day, Thanksgiving, and Christmas.
What does "within 10 business days" mean?
When a deadline is quoted as "within 10 business days," it means 10 working days from the start date, not including weekends or holidays. Use our calculator above to find the exact date.