Business Days Calculator
Count working dates between two calendar dates, with customizable non-working weekdays and specific holiday or leave date exclusions.
Best solution
Default calculation: Business Days Calculator; Custom weekend schedule and holiday exclusions.
Working days
64
26 weekend dates · 0 other exclusions
Only your exclusions are deducted; no automatic holiday calendar.
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Methodology & calculation rule
Working Days = Total Counted Days − Non-Working Weekdays − Custom Exclusions
Default non-working weekdays are Saturday and Sunday. Deselect or select any day of the week to match alternate work schedules (e.g., Sunday–Thursday workweeks).
Civil date intervals operate on calendar positions rather than continuous 24-hour physical increments, avoiding daylight-saving anomalies. Start dates are included by default while end dates are excluded unless explicitly toggled.
All computations run locally on your device in real-time. No dates, notes, or calculation histories are transmitted to any server.
Real-World Context & Technical Standards
T+1 and T+2 Securities Settlement Cycles
Financial markets operate strictly on business day cycles (typically Monday through Friday excluding central bank holidays). US and European stock markets enforce a 'T+1' settlement rule where trades finalize one working day after execution.
Statutory Cooling-Off & Cure Periods
Commercial notice provisions typically specify 'business days' rather than calendar days to prevent statutory deadlines or contract cure periods from expiring over a weekend or national bank holiday.
Standard Two-Week Sprint Capacity
A standard two-week sprint contains 10 working days (80 nominal hours per team member). Software engineering velocity models deduct company holidays and scheduled team PTO directly from this 10-day baseline.
Related date & calendar calculators
| Tool | Type | Format |
|---|---|---|
| Date Difference | Diagnostic | days |
| Weeks Between Dates | Diagnostic | weeks |
| Months Between Dates | Diagnostic | months |
| Years Between Dates | Diagnostic | years |
| Age: Years, Months and Days | Diagnostic | age |
Frequently Asked Questions
How do I exclude regional public holidays?
Enter individual exclusion dates in YYYY-MM-DD format separated by spaces. The tool deduplicates dates and does not double-count dates already excluded as weekends.
Can I set Friday and Saturday as the weekend?
Yes. Deselect Sunday and select Friday in the non-working weekdays selector to calculate working days for middle-eastern or alternate regional workweeks.
Does this calculator add business days to a date?
This page counts working days between two selected endpoints. To add business days ahead, use the Relative Date Calculator in Workdays mode.