Business Days Calculator — Working Days, Not Calendar Days

'Delivery in 10 business days', 'net 30', 'response within 5 working days' — count them exactly: weekends excluded, optional start-date inclusion, and the add-days mode.

Quick answer: Free business days calculator: count working days between two dates (weekends excluded) or add N business days to a date — deadline math for contracts and SLAs.

From To

–Result

–Calendar days

How to use

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About this tool

Business-day math trips everyone: '10 business days' ≈ 14 calendar days most weeks. This calculator counts working days (Mon–Fri) between dates in either direction, and adds business days forward for deadline setting — the same math SLAs, contracts and shipping estimates run on. Public holidays vary by country/region, so add those manually where they fall.

FAQ

Are public holidays excluded?

Not automatically — holidays differ by country/state. Count here, then subtract holidays that fall on weekdays in your range.

Does the count include the start date?

By default no — '5 business days from Monday' lands the following Monday. Toggle inclusion if your contract says otherwise.

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The complete business days calculator guide

Prefer the long version — a worked example, the mistakes people actually make, and answers to real questions? The blog guide Business Days Calculator — Complete Guide, Mistakes & FAQ covers all of it step by step.

Browse the collection: Calculators — All 96 Free Online Tools

Business Days Calculator — Working Days, Not Calendar Days

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About this tool

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