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Business Days Calculator
Count the business days between two dates, or add or subtract business days from a date. Weekends and US federal holidays are skipped, and you can change both.
Business days between two dates
Add or subtract business days
Weekend and holidays Saturday and Sunday off, US federal holidays skipped
Results update automatically as you change the dates or settings.
How business days are counted
A business day is any day that is not a weekend day and not a holiday. By default this calculator treats Saturday and Sunday as the weekend and skips the 11 US federal holidays.
Between two dates
By default the start date is not counted and the end date is counted. Monday to Friday of the same week is 4 business days. Tick "Count the start date" to count both ends, which gives 5.
Adding business days
The start date is never counted. Day 1 is the first business day after the start date. Adding 1 business day to a Friday gives the next Monday, unless that Monday is a holiday.
Holidays on a weekend
A holiday on a Saturday is observed on the Friday before, and one on a Sunday on the Monday after. The calculator skips the observed date. New Year's Day on a Saturday is observed on Friday, December 31 of the year before.
Not included
State and local holidays, the day after Thanksgiving, Christmas Eve, and Inauguration Day (a holiday only for federal workers in the Washington, DC area). Add any of these under "Other days off".
Example: business days between two dates
From Monday, November 2, 2026 to Monday, November 30, 2026, with the start date not counted and the end date counted:
- 28 calendar days are counted, November 3 through November 30.
- 8 of them fall on a Saturday or Sunday.
- 2 are federal holidays: Veterans Day on Wednesday, November 11, 2026 and Thanksgiving Day on Thursday, November 26, 2026.
That leaves 28 − 8 − 2 = 18 business days. The day after Thanksgiving is not a federal holiday, so it counts as a business day.
Example: adding business days
Adding 10 business days to Friday, December 18, 2026 gives Tuesday, January 5, 2027. Counting starts on the day after the start date. Along the way the count skips 6 weekend days and 2 holidays: Christmas Day (Friday, December 25, 2026) and New Year's Day (Friday, January 1, 2027). The result is 18 calendar days after the start date.
US federal holidays in 2026
These are the dates the calculator skips in 2026. The observed date is the day federal offices close.
| Holiday | Date | Observed (day off) |
|---|---|---|
| New Year's Day | Thursday, January 1, 2026 | Same day |
| Birthday of Martin Luther King, Jr. | Monday, January 19, 2026 | Same day |
| Washington's Birthday | Monday, February 16, 2026 | Same day |
| Memorial Day | Monday, May 25, 2026 | Same day |
| Juneteenth National Independence Day | Friday, June 19, 2026 | Same day |
| Independence Day | Saturday, July 4, 2026 | Friday, July 3, 2026 |
| Labor Day | Monday, September 7, 2026 | Same day |
| Columbus Day | Monday, October 12, 2026 | Same day |
| Veterans Day | Wednesday, November 11, 2026 | Same day |
| Thanksgiving Day | Thursday, November 26, 2026 | Same day |
| Christmas Day | Friday, December 25, 2026 | Same day |