Business day calculator

Calculate the number of working days between two dates in seconds. Exclude weekends, public holidays, or both, and choose from multiple countries to get accurate business-day calculations for your schedule, project, or deadline planning.

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How does a business day calculator work?

Our business day calculator counts the number of working days between two dates, while excluding weekends and public holidays to provide an accurate result.

Depending on your requirements, our business day calculator can:

  • Count business days between two dates
  • Add business days to a specific date
  • Exclude weekends automatically
  • Exclude public holidays
  • Calculate project timelines and deadlines

Why use a business day calculator?

Calculating working days manually can be time-consuming and prone to error, especially when longer date ranges or public holidays are involved.

Our business day calculator helps save time and ensures greater accuracy when planning schedules and managing deadlines.

Improve project planning

Project managers and teams can use business day calculations to establish realistic timelines and ensure key milestones are met.

Calculate payment terms

Many contracts and invoices specify payment periods in business days rather than calendar days. A business day calculator helps determine accurate due dates.

Manage delivery schedules

Businesses can use working day calculations to estimate shipping times, delivery windows and service level agreements.

Support workforce planning

HR departments and managers can use business day calculations when planning leave periods, employee schedules and operational requirements.

Common uses for a business day calculator

A business day calculator can be useful for a wide range of personal and professional tasks, including:

  • Project management
  • Contract administration
  • Invoice payment calculations
  • Shipping and logistics planning
  • Human resources management
  • Legal and compliance deadlines
  • Customer service commitments
  • Event planning
  • Construction scheduling
  • Financial reporting

Factors that affect business day calculations

Several factors can influence the number of business days between two dates.

Weekends

Most business day calculations exclude Saturdays and Sundays, although some organisations may use alternative working patterns.

Public holidays

National, regional and local public holidays may be excluded from calculations depending on the requirements of the user.

Working schedules

Certain industries operate seven days a week or use shift-based schedules, which can affect what constitutes a business day.

Regional differences

Business days and public holidays can vary between countries and jurisdictions, making location-specific calculations important.

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