Business Days Calculator
Count working days between dates, add or subtract business days, and account for US/UK holidays with shareable date calculator links.
Use negative numbers to count backwards.
Calendar span
7 days
Inclusive: 8 days
Jul 8, 2026 → Jul 15, 2026
Weeks & weekdays
1w 0d
6 weekdays · 2 weekend days
Business days (US)
6
Includes weekends + region-specific holidays
Add/Subtract business days
Starting from Jul 8, 2026, moving forward 5 working days in the US calendar lands on:
Wednesday, July 15, 2026
Business days skip weekends plus official holidays for the region you selected.
Deep-link any scenario by sharing URLs like /time/duration?start=2025-11-01&end=2025-12-15&bizdays=US.
Upcoming holidays (US)
Keep these non-working days in mind when planning timelines.
Labor Day
Monday, September 7, 2026
Veterans Day
Wednesday, November 11, 2026
Thanksgiving
Thursday, November 26, 2026
Christmas Day
Friday, December 25, 2026
New Year's Day
Friday, January 1, 2027
Martin Luther King Jr. Day
Monday, January 18, 2027
Business day calculator for real deadlines
Use this workday calculator when you need to count business days between two dates, add working days to a start date, or subtract business days from a deadline. The result updates for weekends and the selected holiday calendar.
Common workday calculations
- Count working days between contract, invoice, payroll, or delivery dates.
- Add 5, 10, 30, or 45 business days to a project start date.
- Subtract business days from a filing, review, or launch deadline.
- Compare calendar days, weekdays, weekends, and holiday-adjusted business days in one view.
Why planners link here
Legal, finance, and operations teams need a single source of truth for date math. Tinapps tracks weekdays, weekends, and observed holidays so remote teams agree on timelines without emailing screenshots.
Workflow ideas
- Attach a deep link to SOWs so clients can see exactly how many working days span a milestone.
- Embed the business-day offset in incident runbooks to forecast postmortem due dates.
- Share upcoming holiday lists during handoffs so teams see when coverage gaps might occur.