Business Days Calculator
Count working days between two dates — with or without holidays
Business Days Calculator
People often search for queries like "how many business days between dates", "working days calculator", or "count business days". This tool provides accurate results instantly — business days, weekend days, and holidays all calculated in one step. Use this result to plan project deadlines, payroll periods, or contract timelines more effectively.
How many business days between two dates?
Enter a start date and end date above to instantly see how many business days fall between them. Both dates are included if they fall on a weekday. Toggle the holiday option to also exclude all 10 US federal holidays.
Does this include weekends?
No — by definition, business days exclude weekends. Saturdays and Sundays are never counted. The result shows the breakdown of calendar days, weekend days excluded, and optional holiday days so you can see exactly how the figure is calculated.
Working days explained
"Working days" and "business days" are interchangeable terms for Monday–Friday days that are not public holidays. 10 business days equals exactly 2 calendar weeks. The calculator shows both calendar days and business days so you can compare and plan accurately.
How to use the business days calculator
Select your start and end dates — the result shows total business days, total calendar days, weekends excluded, and holidays excluded (if enabled). The URL updates automatically so you can bookmark or share the exact calculation.
This tool is useful for project planning, payroll calculations, contract deadlines, SLA tracking, and any situation where you need to count only working days between dates.
Common use cases
Count working days from project start to due date for accurate scheduling, excluding weekends when no work is done.
Calculate the number of working days in a pay period to correctly compute daily wages or salary proration.
Many contracts specify delivery "within 10 business days." Calculate the exact calendar date that falls on.
Count how many working days remain in a month or quarter to plan vacation days and time-off requests.
Service level agreements often use business days. Find out whether a deadline has been met or missed.
Count instruction days in a semester or term, excluding weekends and university holiday closures.
Example calculations
Frequently asked questions
What counts as a business day?
A business day is any weekday (Monday through Friday) that is not a public holiday. Saturdays and Sundays are always excluded. If you enable the holiday option, US federal holidays are also excluded.
Does the calculator include the start and end date?
Yes — both the start date and the end date are counted if they fall on a business day. This is the standard inclusive calculation used in most business and legal contexts.
Which holidays are excluded?
The calculator excludes all 10 US federal holidays: New Year's Day, Martin Luther King Jr. Day, Presidents' Day, Memorial Day, Juneteenth, Independence Day, Labor Day, Veterans Day, Thanksgiving, and Christmas Day.
How do I calculate business days manually?
Count all days between the two dates, then subtract Saturdays and Sundays. If excluding holidays, also subtract the number of holidays that fall on weekdays within the range.
What is the difference between business days and calendar days?
Calendar days count every day including weekends. Business days only count Monday to Friday, so 10 business days equals 2 full calendar weeks. The calculator shows both so you can compare easily.