StraightToolsBusiness Days Calculator
Count weekdays between two dates, excluding Saturdays and Sundays.
What counts as a business day?
This basic calculator counts Monday through Friday and does not automatically exclude public holidays.
When to use this tool
Use this calculator to count Monday-through-Friday weekdays between two dates. It is useful for rough delivery, processing, hiring, and project estimates.
How the result is calculated
The tool walks through the date range and counts days that are not Saturday or Sunday. This makes it a weekday calculator rather than a jurisdiction-specific holiday calendar.
Worked example
A seven-day span from one Monday to the next generally contains five weekdays between the dates, depending on whether the starting date is included by the rule you are applying.
What to keep in mind
Public holidays are not automatically excluded. Banks, governments, exchanges, employers, and countries use different holiday calendars, so verify formal deadlines with the relevant authority.
About our calculations
StraightTools is designed to show the method behind the answer, not just the result. Inputs are handled in your browser for this tool. For important financial, legal, medical, tax, safety, or contractual decisions, verify the result with an appropriate authoritative source or qualified professional.
How business-day calculations work
Business-day calculations are designed for schedules where weekends are not counted as working days. They are useful for shipping estimates, payment terms, project schedules, service-level targets, and workplace deadlines.
Weekends and holidays
A standard business-day estimate typically excludes Saturday and Sunday. Holiday calendars vary by country, state, employer, bank, carrier, and exchange, so verify holiday treatment whenever an exact deadline matters.
When to use calendar days instead
If the instruction says “days,” “calendar days,” or gives a simple date offset with no workday rule, use the Date Calculator. To compare two fixed dates, use Days Between Dates.
Business days FAQ
Are weekends business days?
In a standard Monday-through-Friday schedule, no. Some organizations operate on different workweeks, so local rules can differ.
Are holidays automatically business days?
Not necessarily. Holiday treatment depends on the calendar that governs the deadline or schedule.