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Business Days Calculator
Count the working days between two dates, or add and subtract business days from a date — skipping weekends and US federal holidays.
Short answer
A business day (or working day) is any weekday, Monday–Friday, that isn’t a public holiday. To count business days between two dates, tally the weekdays from the day after the start through the end date and skip Saturdays, Sundays, and holidays. Enter your dates below — the calculator does it instantly and can include or exclude the 11 US federal holidays.
Business days
21
between Monday, August 24, 2026 and Wednesday, September 23, 2026, skipping weekends and holidays.
Need a due date instead? Switch to “add / subtract days,” or use the add business days calculator to find the date N business days from now.
Business days vs. working days vs. calendar days
Business days and working days mean the same thing: Monday through Friday, excluding public holidays. Calendar days count every day, including weekends and holidays. Deadlines from banks, courts, and shipping carriers are almost always in business days — “funds available in 2 business days,” “ships in 3–5 business days” — which is why counting them correctly matters.
US federal holidays in 2026
| Holiday | Date | Observed | Day of week |
|---|---|---|---|
| New Year's Day | January 1 | Same day | Thursday |
| Martin Luther King Jr. Day | January 19 | Same day | Monday |
| Presidents' Day | February 16 | Same day | Monday |
| Memorial Day | May 25 | Same day | Monday |
| Juneteenth | June 19 | Same day | Friday |
| Independence Day | July 4 | July 3 | Friday |
| Labor Day | September 7 | Same day | Monday |
| Columbus Day | October 12 | Same day | Monday |
| Veterans Day | November 11 | Same day | Wednesday |
| Thanksgiving Day | November 26 | Same day | Thursday |
| Christmas Day | December 25 | Same day | Friday |
These are the days this calculator skips, alongside every Saturday and Sunday. When a fixed-date holiday lands on a weekend it is observed on the nearest weekday — Saturday shifts back to Friday, Sunday forward to Monday — which is why the observed date sometimes differs from the statutory one. State and company holidays are not included.
How we calculate this
Counting is exact and transparent — no rounding, no estimates:
- Weekdays only. Saturdays and Sundays are never business days; the count walks each calendar day and keeps Monday–Friday.
- Federal holidays. the 11 US federal holidays are removed when 'exclude holidays' is on, using each holiday's observed date (weekend holidays shift to the nearest Friday or Monday).
- Between two dates. counts business days after the start through the end date; an 'include start' option counts the start day too.
- Add or subtract. steps forward (or backward for a negative count) one calendar day at a time, decrementing only on business days, until the requested number is reached.
Assumptions
- Holidays are US federal holidays only — state, local, and company holidays vary and aren't included.
- The observed-date rule (Sat→Fri, Sun→Mon) matches how US federal offices shift weekend holidays.
- All dates are handled in your local time zone; no time-of-day is considered.
Last reviewed: July 19, 2026
Frequently asked questions
What is a business day?+
A business day (or working day) is any weekday — Monday through Friday — that isn't a public holiday. Saturdays, Sundays, and federal holidays are not business days. This calculator counts Monday–Friday by default and can also skip the 11 US federal holidays.
How do I count business days between two dates?+
Count every weekday from the day after the start date through the end date, skipping Saturdays, Sundays, and any holidays. For example, Monday to the following Friday is 4 business days. Rather than counting by hand, enter both dates above and the calculator does it instantly — with an option to include holidays or not.
Does the calculator include the start and end date?+
By default it counts the business days after the start date through the end date (so a Monday-to-Friday span is 4). Turn on 'include start date' to count the start day too, which makes the same span 5. The end date is always included when it's a business day.
Which holidays are excluded?+
The 11 US federal holidays: New Year's Day, Martin Luther King Jr. Day, Presidents' Day, Memorial Day, Juneteenth, Independence Day, Labor Day, Columbus Day, Veterans Day, Thanksgiving, and Christmas. When a fixed-date holiday lands on a weekend, the observed date shifts to the nearest weekday, and the calculator uses the observed date. Turn holidays off to count weekdays only.
How do I add or subtract business days from a date?+
Use the 'add business days' mode: enter a start date and a number of business days, and the tool lands on the resulting weekday, skipping weekends and holidays. Enter a negative number to go backward. This is how shipping and lead-time estimates like 'ships in 3 business days' are calculated.
Why do business days matter?+
Banks, courts, government offices, and shipping carriers operate on business days, so deadlines and delivery estimates are usually quoted in them — 'funds available in 2 business days,' 'respond within 10 business days.' Counting them correctly (and accounting for holidays) is the difference between hitting and missing a deadline.
Related tools
- Add business days to a date
- Hours calculator — time between two clock times.
Holidays are US federal holidays only; state, local, and company holidays vary. Dates are handled in your local time zone.