Business Days Calculator
Plan deadlines, vacations, or project timelines by subtracting weekends and custom holidays from any date range.
Invalid or duplicate dates are ignored automatically.
Results
Business days
1
Between March 9, 2026 and March 9, 2026
Excluded days
0 weekend day(s)
Total calendar days
1
Inclusive of start and end dates
Instructions
Define the date range
Select start and end dates that include weekends if needed—the tool will trim non-business days for you.
Choose weekend rules
Uncheck Saturdays/Sundays to exclude them (default). If your business works weekends, include them as working days.
Enter holidays
List company holidays or public days off on separate lines to remove them from the business day count.
Formula
Total Days = (End − Start) + 1
Business Days = Σ (Day is included weekend? false : true) − Holidays
Holidays are counted only if they fall between start and end
Example: Mar 1–Mar 31, 2026 with weekends off and holidays on Mar 17 & Mar 27 → 21 business days.
Scheduling Tips
Counting business days is essential for contract timelines, invoice terms, and project planning. Use accurate counts to stay compliant.
- Check HR holiday calendars annually and update the list for accurate reporting.
- Share counts with clients to align on deliverable dates without weekend surprises.
- For global teams, run separate calculations per region with local holidays.
- Combine this with a Gantt chart or sprint planner to track milestones.
Common Questions
Are start and end dates included?
Yes, both dates are considered. Adjust by shifting one day forward/back if you need an exclusive range.
Does it handle timezone differences?
Dates are treated as calendar days without time zones, so daylight saving transitions don’t affect results.
Can I include partial days?
This tool counts whole days. For partial workdays, adjust totals manually or convert to hours elsewhere.
What if I work an alternative schedule?
Toggle weekends as needed. For custom patterns (e.g., 4-on/3-off), run multiple ranges or create a custom calendar list.