Time Tool

Business Days Calculator

Calculate working days between two dates by excluding Saturdays, Sundays, and optional holiday dates. Use it for delivery estimates, deadlines, payroll, and project planning.

Business day inputs

Business days formula

Business days = calendar days - weekend days - listed weekday holidays.

Weekend exclusion

Automatically removes Saturdays and Sundays from the count.

Manual holidays

Enter custom holiday dates as YYYY-MM-DD to remove them from weekday counts.

Deadline planning

Separates business days, weekend days, and holidays for audit-friendly planning.

How to count business days

Business-day counting is different from calendar-day counting. Most teams exclude Saturday and Sunday, then subtract public holidays, company shutdown days, or planned office closures. This calculator lets you enter holidays manually as comma-separated dates so the result can match your own schedule.

For legal, payroll, shipping, or compliance deadlines, confirm the official holiday calendar and cut-off rules that apply to your location or organization. Some businesses also operate on Saturdays or use regional weekend patterns, so adjust the result if your workweek differs.

Business day inputs

InputWhat it meansPlanning note
Start dateThe first date to count fromUse the order date, kickoff date, or first eligible workday.
End dateThe date to count towardCan be included or excluded depending on your deadline rule.
Holiday listComma-separated YYYY-MM-DD datesOnly weekday holidays reduce the business-day total.
Inclusive countingWhether to count the end dateUse the rule that matches your organization or contract.

Common use cases

Shipping estimates

Estimate handling or delivery windows in working days.

Project deadlines

Convert a date range into available workdays.

Payroll and HR

Count weekdays for leave, probation, or notice periods.

Frequently asked questions

What counts as a business day?

In this calculator, Monday through Friday count as business days unless you list the date as a holiday.

Are holidays excluded automatically?

No. Enter holidays manually as YYYY-MM-DD so the result matches your country, company, or project calendar.

Can I include the end date?

Yes. Use inclusive counting when your deadline rule counts both the start and end dates.

Does this support non-standard weekends?

This version assumes Saturday and Sunday weekends. Adjust manually if your organization uses a different workweek.

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Last reviewed: August 1, 2026. Date calculations use your browser time zone unless noted.

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