Business Days Calculator

Business Days Between Two Dates

Add Business Days to a Date

Business Days

About Business Days Calculator

What Is a Business Days Calculator?

A business days calculator counts only Monday through Friday between two dates, excluding weekends. This is critical for project deadlines, shipping estimates, contract terms that specify business days, payroll calculations, and legal timeframes. Many industries and legal systems define deadlines in business days rather than calendar days, making this calculation essential for compliance and planning.

How It Works

The calculator iterates through each day between the start and end dates, counting only weekdays (Monday through Friday). Saturdays and Sundays are excluded. The result shows both the number of business days and the total calendar days for comparison. You can see exactly how many weekend days were excluded.

How to Use This Calculator

Enter the start date and end date. Click Calculate to see the number of business days between them. The results also show total calendar days, weekends excluded, and a breakdown by week.

Frequently Asked Questions

Does it exclude public holidays?

This calculator excludes weekends only. Public holidays vary by country and region, so they are not automatically excluded. You can manually adjust the count for known holidays.

Is the start date included?

The start date is not included in the count. If you start counting from Monday, the first business day counted is Tuesday.

Can I add business days to a date?

Yes. Switch to the add mode, enter a start date and the number of business days to add, and the calculator will find the target date.