What is the 30-business-day rule?

Many legal and commercial contracts specify notice periods in business days rather than calendar days. 30 business days is typically 6 calendar weeks (if no holidays are included).

How do I calculate a deadline 10 business days from today?

Start from today and count 10 weekdays forward (skip Saturdays and Sundays). This calculator shows the count between two dates — enter today as the start and your proposed deadline as the end to verify.

Business Days Calculator — Working Days Between Two Dates

The Business Days Calculator counts the number of working days between a start date and an end date, excluding weekends (Saturday and Sunday). Use it for project deadlines, delivery estimates, invoice payment terms, contract notice periods, and any business context where only weekdays count.

Start Year

Start Month (1–12)

Start Day (1–31)

End Year

End Month (1–12)

End Day (1–31)

How to Use This Calculator

1
Enter the start date and end date.
2
Click Calculate to count the number of business days (Mon–Fri) between them.
3
The result excludes weekends but does not account for public holidays.

Frequently Asked Questions

No — this calculator excludes only weekends (Saturday and Sunday). Public holidays vary by country, region, and year. To account for holidays, subtract the number of public holidays that fall within the date range.

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