Add Business Days to a Date (Skips Weekends & Holidays)

Pick a start date and a number of working days. Weekends and public holidays are skipped.

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Disclaimer: Results are computed from open-source holiday data and general conventions and may be incomplete or wrong (for example, regional, ad-hoc or newly declared holidays). They are not legal or financial advice. Verify any contractual, statutory or legally binding deadline against an official source before relying on it. API spec · Pricing & API keys

How it counts

The start date is not counted. The calculator moves forward one day at a time and counts only days that are not a Saturday, Sunday, public holiday for the selected country and region, or a company holiday you list. The day the count reaches your number is the result. This matches how Excel's WORKDAY function counts.

Worked example (United States holidays)

10 business days after Friday, November 20, 2026 is Monday, December 7, 2026. Three weekends and Thanksgiving (November 26) are skipped. (Prefilled above.)

Need to go backwards?

Enter a negative number, or see subtract business days from a date. To count the working days between two dates instead, use the business days calculator.

The same calculation is available as a JSON API, so you can run it inside an accounting, ERP or workflow system. Get a free API key (1,000 requests a month) or read the OpenAPI spec.

Holiday data comes from an open-source dataset and may be incomplete, especially for regional, ad-hoc or newly declared holidays. Check legally or financially critical deadlines against an official source.

Frequently asked questions

Is the start date included?

No. The first business day after the start date is day 1.

Can I add my company's holidays?

Yes. List them as YYYY-MM-DD dates in the company holidays box and they are skipped too.

Which weekend days are skipped?

Saturday and Sunday.