Business Days Calculator
Business Days Calculator: Count Working Days Between Two Dates
A business days calculator tells you how many working days fall between two dates, or which date you reach after a set number of working days. Weekends are left out, and you can skip public holidays as well. It is useful for delivery estimates, invoice due dates, notice periods, project schedules and any deadline that is written in business days instead of calendar days. Choose which days make up your weekend, turn on US federal holidays or add your own dates, and the result updates as you type.
Quick answer: from Sun, Nov 1, 2026 to Mon, Nov 30, 2026 there are 21 business days with only weekends skipped, and 19 when the US federal holidays on November 11 and November 26 are skipped too. Thirty business days after Tue, Oct 6, 2026 is Tue, Nov 17, 2026.
How Business Days Are Counted
The calculator looks at each calendar day in your range. A day counts only if it is not a weekend day and not a holiday. Holidays that land on a weekend are not removed twice.
The start and end dates are counted by default, as long as they are working days. If you are measuring the time that passes, such as a delivery window that starts the day after an order, change the Counting setting to leave out the start date, the end date or both.
Worked Example
The table shows November 2026, a month with 30 calendar days that starts on a Sunday.
| November 1 to 30, 2026 | Weekends only | With US holidays |
|---|---|---|
| Calendar days | 30 | 30 |
| Weekend days | 9 | 9 |
| Holidays skipped | 0 | 2 |
| Business days | 21 | 19 |
The year works the same way. All of 2026 has 261 weekdays, and skipping the 11 US federal holidays leaves 250 business days.
Adding and Subtracting Business Days
To move a date, switch to Add or subtract days and enter how many business days to move. The start date itself is not counted, so one business day after a Friday is the next Monday. Moving thirty business days from Tue, Oct 6, 2026 reaches Tue, Nov 17, 2026, which is 42 calendar days later. With US federal holidays skipped the answer is Thu, Nov 19, 2026. Going backward works the same way, and ten business days before Tue, Oct 6, 2026 is Tue, Sep 22, 2026.
Business Days in Each Month of 2026
These figures use a Monday to Friday week. The holiday column shows how many weekdays the US federal holidays remove, including the observed Friday or Monday.
| 2026 | Weekdays | Holidays | Business days |
|---|---|---|---|
| January | 22 | 2 | 20 |
| February | 20 | 1 | 19 |
| March | 22 | 0 | 22 |
| April | 22 | 0 | 22 |
| May | 21 | 1 | 20 |
| June | 22 | 1 | 21 |
| July | 23 | 1 | 22 |
| August | 21 | 0 | 21 |
| September | 22 | 1 | 21 |
| October | 22 | 1 | 21 |
| November | 21 | 2 | 19 |
| December | 23 | 1 | 22 |
Weekend Settings
Not every workplace uses the same week. Pick the pattern that matches yours and the calculator adjusts the count.
| Weekend setting | Working days per week | Typical use |
|---|---|---|
| Saturday and Sunday | 5 | Most offices in North America and Europe |
| Friday and Saturday | 5 | Common in parts of the Middle East |
| Sunday only | 6 | Shops, factories and some trades |
| Saturday only | 6 | Some schools and services |
| No weekend | 7 | Round the clock operations |
About US Federal Holidays
The built-in list covers 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 Day. When a fixed-date holiday falls on a Saturday it is observed on the Friday, and when it falls on a Sunday it is observed on the Monday. Martin Luther King Jr. Day is included from 1986 and Juneteenth from 2021. Company holidays, state holidays and bank closures vary, so add those as custom dates in the YYYY-MM-DD format.
Related Date Tools
To count every calendar day between two dates, use the days between dates calculator. To add months or years to a date, the date calculator is a better fit, and the work hours calculator turns working days into paid hours. For hours and minutes across a day, try the hours calculator and the time calculator.
Limits of This Calculator
The tool counts whole days and does not account for time zones, half days or business hours. Dates must fall between the years 1900 and 2200. Shipping carriers, banks and courts may define business days in their own way, so check the terms of your agreement for deadlines that matter.
How to Use This Business Days Calculator
Pick what you need
Choose Count days to measure a range, or Add or subtract days to find a new date.
Enter the dates
Set the start and end dates, or the start date and the number of business days. The slider moves them quickly.
Set your week and holidays
Choose the weekend days, decide which dates are counted, and skip US federal holidays or your own dates.
Read and copy
See the business days, weekend days, holidays skipped and work hours, then copy the result or press Reset.