Step by step
- Choose Between two dates or Add business days in the calculator.
- Select your start and end dates, or enter the number of business days to add.
- Pick the country holiday calendar (United States, Brazil, Mexico, or No holidays).
- Check Count the start date if your deadline includes the first day, then read the result.
At a glance
| Term | Days included | Common use |
|---|---|---|
| Business days | Monday–Friday minus holidays | Shipping, banking, contracts |
| Calendar days | Every day including weekends | Rent, hotel stays, age |
| Observed holiday | Friday or Monday when on weekend | US federal holidays |
Related questions
What does business days mean for delivery?
It means the carrier only counts Monday through Friday and skips federal holidays. A 3-business-day shipment sent on Friday typically arrives on Wednesday.
When are business days counted?
Most deadlines start counting the day after the start date and include the final day. You can toggle Count the start date in the tool if your agreement includes day one.
What days are you unable to work as business days?
Saturdays, Sundays, and the 11 US federal holidays are excluded by default. If a federal holiday falls on a Saturday it is observed on Friday, and on Sunday it is observed on Monday.
More questions: business days calculator
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- Do Saturdays Count as Business Days?
- Do Holidays Count as Business Days?
- How to Convert Business Days to Calendar Days
Open the full business days calculator →
Updated November 14, 2026.