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20 days

Business Days Calculator

100% Free

Calculate working days between two dates, excluding weekends and holidays.

Real-time
Client-Side
Holiday list
Start date
End date
Holidays to exclude (optional, one YYYY-MM-DD per line)
Business days
10
Calendar days
15
Weekend days
5
Holidays excluded
0

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<iframe
  src="https://tools.town/embed/business-days-calculator/"
  width="100%"
  height="600"
  style="border:none; border-radius:12px;"
  loading="lazy"
  title="Business Days Calculator">
</iframe>

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How to use

Count mode: Enter start and end dates to see total business days between them.

Add mode: Enter a start date and a number of business days to find the resulting working date.

Optionally add specific holiday dates to exclude them from the count.

When to use

SLA deadlines, invoice payment terms, project scheduling, HR onboarding timelines, or any business process measured in working days.

Frequently Asked Questions

Which holidays does it exclude?
By default it excludes weekends (Saturday and Sunday). You can optionally add custom holidays as specific dates.
Can I add N business days to a start date?
Yes — switch to 'Add business days' mode to find the date that is exactly N working days from a start date.
Is anything sent to a server?
No. All calculations run in your browser.
📖

Want to understand the math?

Browse all guides →
How to Use Business Days Calcu
business-days

How to Use Business Days Calculator — Complete Guide

Learn how to count working days between dates using the free Business Days Calculator on Tools.Town — skip weekends, add holidays, find deadline dates.

7 May 2026

5 min read

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