Business Days Calculator
Count the working days between two dates, or find the date that is a set number of business days away. Saturdays and Sundays are skipped, and you can paste your own holidays to skip as well.
Last updated November 4, 2026
One date per line, YYYY-MM-DD. Saturdays and Sundays are always skipped.
Result
9 business days
Monday, November 2, 2026 to Friday, November 13, 2026 (start date not counted).
- Calendar days counted: 11
- Weekend days removed: 2
- Holidays removed: 0
- Business days: 9
Show the work
- Window counted: November 3, 2026 to November 13, 2026, which is 11 calendar days.
- Remove 2 Saturday or Sundays (weekend days).
- Remove 0 weekday holidays; holidays on a weekend are not removed twice.
- 11 - 2 - 0 = 9 business days.
How business days are counted
business days = calendar days counted − weekend days − weekday holidays
A business day is Monday to Friday that is not on your holiday list. When counting between two dates the end date is always counted. The start date is not counted unless you tick the box, like a deadline counted from the start.
To add or subtract business days, the calculator steps one calendar day at a time from the start date. It skips Saturdays, Sundays and listed holidays, and stops once it has passed the number of business days you asked for.
A holiday that falls on a Saturday or Sunday is already a weekend day, so it is not removed a second time. Leap days are ordinary calendar days: February 29 counts as a business day when it falls on a weekday.
See how we calculate for the formulas, sources and review schedule behind every calculator.
Entering holidays
No country calendar is built in, because public and bank holidays differ by country, state and employer. Type or paste dates one per line as YYYY-MM-DD, for example 2026-12-25. Duplicates are merged and an invalid line is flagged. Up to 1,000 holidays are accepted.
Business days versus calendar days
For the plain gap between two dates in years, months and days, use the Date Difference Calculator. For adding hours and minutes to a clock time, use the Add Time Calculator. This page counts working days only.
How to use the Business Days Calculator
- Choose whether to count business days between two dates or to add or subtract business days.
- Enter the start date and either the end date or the number of business days. Tick the start-date box if it should count.
- Optionally enter holidays to skip, one date per line.
- Read the result, open "Show the work" for the weekend and holiday counts, then Copy, Print or Share.
Worked example
Count from Monday, November 2, 2026 to Friday, November 13, 2026 with Veterans Day (November 11) as a holiday. Then add 10 business days to Friday, November 20, 2026 with Thanksgiving (November 26) off.
| Item | Result |
|---|---|
| Calendar days counted (Nov 3 to Nov 13) | 11 |
| Weekend days removed | 2 |
| Holidays removed | 1 |
| Business days between the dates | 8 |
| Same range with the start date counted | 9 |
| 10 business days after Nov 20, 2026 | Monday, December 7, 2026 |
| Weekend days and holidays skipped | 6 and 1 |
Frequently asked questions
Is the start date counted as a business day?
Not by default: the count covers each day after the start date up to and including the end date. Tick "Count the start date too" to include it when it is a weekday that is not a holiday.
What happens if the end date is before the start date?
The calculator tells you the end date is before the start date and shows no count. Swap the two dates to count the same period, or use the subtract option to move backward.
Does it include public holidays automatically?
No. Holidays vary by country, state and employer, so you enter the dates you want skipped.
Why is there a limit on the number of business days?
A date range is limited to about 100 years and adding or subtracting to 36,500 business days. Larger values show a clear message instead of a result.