Business Day Calculator (Working Days, Free)

Why Calculate Business Days?

Business days (working days) exclude weekends and count only Monday-Friday—the standard for payment terms, project deadlines, SLAs (Service Level Agreements), and contract delivery dates. Calculating "Net 30" invoice terms or project estimates requires excluding weekends to set accurate due dates.

Common Use Cases

• Invoice payment terms: Calculate due dates for Net 30, Net 60, Net 90 terms
• Project management: Estimate project completion dates excluding weekends
• SLA compliance: Track response times in business days for support tickets
• Contract deadlines: Calculate delivery dates for contracts specifying business days
• Payroll: Calculate working days for hourly employees or contractor payments
• Shipping estimates: Provide accurate delivery dates for 5-7 business day shipping

Why This Tool?

• Weekend exclusion: Automatically skips Saturdays and Sundays
• Bidirectional: Calculate forward (due date) or backward (start date)
• Instant calculation: See business days in real-time as you select dates
• 100% client-side: Your dates never touch our servers
• Free forever: Unlimited calculations with no rate limits

Pro tip: For converting timestamps to dates, use our Timestamp to Date tool. For VAT calculations on invoices, try our VAT Calculator.