Calculate business days, add/subtract workdays, and find deadlines
Start Date
Business Days
End Date (for counting)
Result
Step-by-Step Derivation
How Business Days Work
Business Days = Monday through Friday
Weekends = Saturday and Sunday (excluded)
Count skips weekends when adding days
Business days are the standard for calculating project deadlines, payroll cycles, and delivery schedules.
⚠This calculator excludes weekends only. For holiday exclusions, manually adjust or add holiday-specific logic.
Why Calculate Business Days?
Business day calculations are essential for project management, legal deadlines, shipping schedules, and payroll processing. Unlike calendar days, business days accurately reflect actual working days available for tasks and deliveries.
Project Deadlines
Set realistic deadlines that account for weekends and non-working days.
Payroll Processing
Calculate pay periods, direct deposit timing, and payroll deadlines accurately.
Shipping Deadlines
When does an order need to ship to arrive by a specific business day?
Legal Deadlines
Court filings and legal responses often specify deadlines in business days.
Teaching Example: Start Monday, add 10 business days. Week 1: Mon-Fri (5 days). Week 2: Mon-Fri (5 days). End date = second Friday. If start is Friday, adding 1 business day = Monday.
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