Count business days between two dates or add/subtract business days, excluding weekends and US federal holidays.
Choose your calculation mode: count business days between two dates, or add/subtract business days from a start date.
Enter your start date using the date picker. You can select any date in 2025 or nearby years.
For counting mode, also enter the end date. For add/subtract mode, enter the number of business days (use a negative number to subtract).
Select whether to exclude weekends only, or both weekends and US federal holidays.
Click "Calculate" to see the detailed result including the total business days, calendar days, weekend days, and holidays excluded.
Business days are calculated by taking the total calendar days between two dates and subtracting all weekend days (Saturdays and Sundays) and any observed US federal holidays that fall on weekdays. When adding or subtracting business days, the calculator advances one calendar day at a time, skipping weekends and holidays until the target number of business days is reached.
Counting from Monday, January 6, 2025 to Friday, March 28, 2025 with weekends and US federal holidays excluded. The period spans 82 calendar days. Subtracting 23 weekend days (Saturdays and Sundays) and 3 holidays (MLK Jr. Day on Jan 20, Presidents' Day on Feb 17) yields 56 business days.
Starting from New Year's Day (Wednesday, January 1, 2025 — which is a holiday, so the count effectively begins from the next business day), adding 30 business days while skipping weekends and US federal holidays lands on Monday, February 10, 2025. The calculation skips 12 weekend days and 2 holidays (MLK Jr. Day on Jan 20).
Starting from Tuesday, April 1, 2025 and going backwards 10 business days, skipping weekends and holidays, arrives at Friday, March 18, 2025. The calculation moves back through 14 calendar days, skipping 4 weekend days.
Find answers to the most common questions about business day calculator.
