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Business Days Calculator

100% Free

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

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Client-Side

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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.

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