Business Days Calculator - Working Days Between Dates
Free online business days calculator. Calculate the exact number of working days between two calendar dates, excluding weekends and public holidays.
Inputs
đź”’ Local Processing| Category | Days Count | Share of Period |
|---|---|---|
| Productive Business Days | 21 days | 67.7% |
| Weekend Off-Days | 9 days | 29.0% |
| Public Holidays | 1 days | 3.2% |
How to Use This Calculator
- Select your project start date from the calendar input.
- Select your project completion or target milestone date.
- Choose your standard weekend pattern (Saturday–Sunday or Friday–Saturday).
- Optionally input the number of public or statutory holidays to exclude from the working day count.
Formula & Mathematical Method
Iterates every date from the start through end date inclusive, tallying non-weekend days and subtracting configured statutory holidays.
Business Days = Total Calendar Days - Weekend Days - Public HolidaysExplanation of Variables
| Symbol | Variable Name | Description & Role in Calculation |
|---|---|---|
| Start | Start Date | Initial calendar day of the measured period. |
| End | End Date | Final calendar day of the measured period. |
| Holidays | Public Holidays | Statutory non-working days falling within the period. |
| NetDays | Business Days | Total productive workdays excluding weekends and holidays. |
Worked Calculation Examples
October Month Project Window
Scenario: October 1 to October 31 (31 calendar days, Sat-Sun weekends, 1 public holiday).
Two-Week Sprint
Scenario: 14 calendar days starting Monday through the following Sunday.
Interpretation of Results
Business days calculations exclude weekends and statutory public holidays from total calendar duration, reflecting the true number of commercial working days available for productive labor.
Working Days
Total productive business days available between the two selected dates.
Key Context: Use this figure to estimate billable hours and realistic project delivery deadlines.
Practical Use Cases
Project Management & Sprint Scheduling
Determine exact working business days to establish achievable development milestones.
Legal & Commercial Contract Notices
Calculate statutory business day notice periods for real estate contracts and corporate filings.
Limitations & Key Assumptions
- Does not automatically query regional municipality public holiday calendars; statutory holidays must be entered manually.