Business days calculator

Count working days between dates, or find a date by adding business days.

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Business days calculator processes your input in this browser. Inputs and results are excluded from analytics. Recent tools save tool names, visit counts and last-visit times. Saved tools store only their names. Draft saving is optional and stays on this device; delete saved text with the draft controls. Loading text from a URL is optional and contacts that server; its URL and your IP address are visible to the server. An optional “Use in” action keeps a handoff in this tab. The next tool removes it on arrival and ignores it if more than a minute has passed.

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Your result

Enter your values to see the result.

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Updated 2026-09-20

Using Business days calculator

Saturday and Sunday are excluded by default. Enter the holiday dates that apply to you; no country calendar is assumed. Count mode includes the start date when it is a working day. Add mode begins counting after the start date.

A worked example

Friday September 18, 2026 plus 1 business day is Monday September 21. If you enter September 21 as a holiday, the result is Tuesday September 22.

Before you use the result

Weekend rules and holidays are your choices. This is not a legal deadline calculator. Duplicate holidays are counted once. Add mode accepts up to 100,000 business days in either direction, within years 0001–9999.

Next: Date difference calculator

Next: Date calculator

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ToolOctopus. “Business days calculator.” Updated 2026-09-20. https://tooloctopus.com/business-days-calculator.

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