What are business days?

Business days are weekdays from Monday to Friday, excluding weekends (Saturday and Sunday). This calculator does not exclude public holidays by default.

How many business days are between two dates?

Enter the start and end date in the 'Business Days Between' mode to get the exact count excluding weekends.

Can I add business days to a start date?

Yes, switch to 'Add/Subtract Business Days' mode, enter the start date and number of business days (positive for future, negative for past).

Working Days • Exclude Weekends

Business Day calculator – Calculate Working Business Days

Start date

End date

—

business days (Mon–Fri)

Start date

Business days to add/subtract Positive = future, negative = past

—

resulting date (excluding weekends)

Updated May 2026 5 min read Weekend‑excluded

Need to know the exact number of working days between two dates? Or calculate a deadline 15 business days from now? Our Business Day Counter handles both — excluding Saturdays and Sundays for precise work planning.

5business days per week

~260working days / year (average)

252–253business days (US, no holidays)

±0weekends excluded

What Is a Business Day Calculator?

A business day counter (or working days calculator) measures time only on weekdays — Monday through Friday. Unlike calendar days, it skips Saturdays and Sundays. This is essential for project deadlines, invoice due dates (Net 15, Net 30 business days), visa processing times, and any professional timeline where weekends don't count.

“How many business days until my delivery? What date is 10 working days from now?” — our tool gives instant answers without counting on a calendar.

How to Use This Calculator

Choose a mode — "Business Days Between" or "Add/Subtract Business Days".
For between dates: Select start and end date → click "Calculate". You'll see the total business days (Mon-Fri) plus total calendar days for reference.
For add/subtract: Pick a start date, enter the number of business days (positive for future, negative for past) → get the exact resulting date.
All calculations exclude weekends automatically. Public holidays are not excluded by default — many business day counters offer holiday calendars, but this version focuses on weekends.

Who Uses a Business Day Counter?

Project managers & team leads: estimate task completion based on working days.
Legal professionals: calculate court filing deadlines, response times (often business days).
Finance & accounting: track payment terms (Net 30 business days).
Logistics: shipping and delivery estimates (business days only).
IT & service desks: SLA response times measured in business days.
Academic administrators: grade posting or registration windows.
Travel & hospitality: cancellation/refund policies based on working days.
Healthcare: prior authorization and insurance processing times.

Business Days vs. Calendar Days: Key Differences

Understanding the difference prevents missed deadlines. For example, if you have a 5‑business‑day deadline starting on a Thursday, day 1 is Friday, day 2 is Monday (skipping Saturday/Sunday), and day 5 is the following Wednesday — whereas calendar days would count weekend days. Our calculator handles this automatically.

Example: Business days between June 1 and June 15, 2026

Assuming no public holidays, the tool counts Mondays through Fridays within that range. You can try it above: the exact number depends on the specific start/end dates. Usually, 10–11 business days exist in a two‑week period excluding weekends.

Example: Add 15 business days to today

Switch to "Add/Subtract" mode, enter 15, and you'll see the future date that lands exactly 15 working days ahead — skipping all Saturdays and Sundays. This is ideal for setting realistic project deadlines.

Frequently Asked Questions

What is considered a business day?

Typically Monday through Friday, excluding Saturday and Sunday. This calculator does not automatically exclude public holidays (e.g., Christmas, July 4th). For holiday‑adjusted calculations, you would need a custom holiday calendar.

How to calculate business days between two dates manually?

Count all weekdays (Mon–Fri) within the range, excluding start date if needed. The fastest way is to use this calculator — it handles the counting instantly.

Does this also exclude holidays?

No, this version excludes only weekends. For full business day calculations including holidays (e.g., Thanksgiving, New Year's), you would need a specialized tool with a holiday database.

What if I need to subtract business days (past date)?

In the "Add/Subtract" mode, simply enter a negative number (e.g., -10) and the tool will give you the date that many business days before the start date.

Are business days the same as working days?

Yes, they are used interchangeably, meaning weekdays excluding weekends. Some definitions also exclude company holidays, but the core concept remains Monday–Friday.

Why does my business day count differ from my spreadsheet?

Spreadsheet functions like NETWORKDAYS include an optional holiday range. This calculator uses a simple weekend‑only exclusion. For precise business calendars, always verify with your organization's holiday schedule.

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Final Thoughts

Whether you're planning a project, calculating an invoice due date, or figuring out when a 10‑business‑day waiting period ends, the Business Day Counter saves time and prevents weekend miscalculations. Bookmark this page for all your work‑related date planning.