Tiny Toolkit

Business Days Calculator

Count the number of working days (Monday–Friday) between two dates, or calculate what date falls a given number of business days from a start date. Switch between 'days between' and 'add business days' modes using the toggle. Ideal for contract deadlines, SLA windows, and delivery estimates.

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Frequently Asked Questions

What counts as a business day?
Any weekday (Monday through Friday). The tool does not exclude public holidays by default — it counts all non-weekend days.
What does the 'Add Business Days' mode do?
It calculates the calendar date that falls a given number of business days after (or before, with a negative number) a start date. Useful for contract deadlines and SLA calculations.
Are public holidays accounted for?
Not currently — holiday rules vary significantly by country and region. The tool counts Mon–Fri only. You can manually subtract the holidays that fall in your date range.

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