Business Days

Business Day Calculator

Use this business day calculator to calculate business days between two dates. Count working days, exclude weekends, and estimate timelines for projects, shipping, payroll, contracts, and delivery schedules.

Business Days

Select dates and settings to calculate instantly.

Date calculations account for actual calendar length, including leap years and varying month lengths where applicable.

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Select your dates and inputs to calculate durations, weekdays, future dates, countdowns, and more.

What Is a Business Day Calculator?

A business day calculator helps you calculate the number of business days between two dates. Business days usually mean Monday through Friday, excluding weekends and sometimes public holidays. These calculations are commonly used for delivery estimates, project planning, payroll deadlines, invoicing terms, and contract periods.

How Business Days Are Calculated

Business Days Between Dates

Count all weekdays from the start date to the end date, excluding Saturdays and Sundays. Some calculations may also exclude public holidays depending on settings.

Examples

Workweek Count

Input: Start Date = Monday, End Date = Friday

Result: 5 business days

Delivery Estimate

Input: Start Date = Monday, Add = 7 business days

Result: A future weekday excluding weekends

How to Calculate Business Days

To calculate business days between two dates, count only weekdays from Monday to Friday and exclude Saturdays and Sundays. In some cases, public holidays may also be excluded depending on company policy or local rules.

Business Days vs Calendar Days

Calendar days include every day on the calendar, while business days usually count only Monday to Friday and exclude weekends. Some business day calculations can also exclude holidays.

Common Uses for a Business Day Calculator

Business day calculations are commonly used for shipping estimates, payroll processing, invoice due dates, contract deadlines, legal notices, and project planning. Counting business days instead of calendar days helps create more accurate timelines.

Business Days vs Working Days

Business days and working days are often used interchangeably to mean weekdays from Monday to Friday. However, some companies define working days differently based on local schedules, shift patterns, or observed holidays.

Do Holidays Count as Business Days?

In many contexts, public holidays are not counted as business days. However, the exact definition depends on the company, country, or contract terms. If your calculation involves legal deadlines, shipping commitments, or payroll, check whether holidays should be excluded.

Add or Subtract Business Days

Many people use business day calculations not only to count days between dates, but also to add or subtract business days from a start date. This is useful when estimating due dates, delivery windows, and service-level deadlines.

Frequently Asked Questions

Business days are usually weekdays from Monday to Friday, excluding weekends and sometimes public holidays.

To calculate business days between two dates, count only weekdays from Monday through Friday and exclude Saturdays and Sundays. Some calculations also exclude holidays.

Yes. This calculator excludes Saturdays and Sundays when counting business days.

In most cases, yes. Business days and working days usually mean Monday to Friday, excluding weekends. However, definitions can vary by employer, region, or contract.

Usually no, but it depends on the context. Many business day calculations exclude public holidays in addition to weekends.

Yes. Business day calculators are often used for shipping timelines, delivery estimates, project planning, payroll processing, and invoice due dates.

Calendar days include every day on the calendar, while business days usually count only weekdays and exclude weekends, and sometimes holidays.

Business days are used to set realistic deadlines for contracts, payments, delivery schedules, customer support timelines, and project milestones.