How to add business days
Choose Add workdays, enter the base date, set the number of workdays, and pick Add or Subtract. The target date moves one calendar day at a time but only counts days that are not weekends or excluded holidays.
Business Days Calculator
Add or subtract workdays
Add business days to a date
Use this page when you need to know what date falls 5, 10, 15, 30, or any number of business days from a starting date. The calculator skips weekends and can exclude public holidays.
When this is useful
Adding business days is common for payment due dates, vendor contracts, shipping promises, hiring timelines, customer-support SLAs, and compliance follow-ups.
Examples
If an invoice is due 10 business days after approval, weekends do not count. If a deadline is 30 business days from a start date, the calendar span is usually longer than 30 days because weekends and holidays are skipped.
Common add-business-days queries
| Item | Value | Note |
|---|---|---|
| 5 business days from today | Short support or shipping window | Usually about one week |
| 10 business days from today | Two working weeks | Often used for payment or review windows |
| 15 business days from today | Three working weeks | Useful for project milestones |
| 30 business days from today | About six working weeks | Longer if holidays fall inside the range |
Related business-day pages
FAQ
Does the start date count when adding business days?
The calculator moves forward from the base date and counts future qualifying workdays. The base date is not counted as day one in add mode.
Can I subtract business days?
Yes. Switch the direction to Subtract to find a date before a deadline while skipping weekends and selected public holidays.
Why is 10 business days more than 10 calendar days?
Because weekends and holidays are not counted as business days. Ten business days is often about two calendar weeks, and sometimes longer.