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DATES TOOL

Add Business Days

Add or subtract Monday–Friday working days, skipping optional listed holidays.

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LESS BUSYWORK, MORE DONE

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  1. 01

    Add your input

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  2. 02

    Make it yours

    Adjust the options and run the action.

  3. 03

    Take the result

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Working day addition calculator online

Move a deadline by a working-day count. Only Monday through Friday and supplied holidays are used; national calendars are not automatically loaded.

How to use it

Enter Starting date or select Try example. Review Working days, Holidays, comma-separated YYYY-MM-DD. Select Run tool and inspect the result before copying or downloading.

Options and example settings

OptionChoices / valueExample default
Working daysEnter a value1
Holidays, comma-separated YYYY-MM-DDEnter a value(empty)

Worked examples

Move a deadline by a working-day count.

Worked example — Add Business Days

Settings: Working days: 1; Holidays, comma-separated YYYY-MM-DD: (empty)

Input:

2026-10-09

Output:

2026-10-12

Choose the right tool

The holiday list is supplied by you. Check the start-date inclusion rule and the result near weekends or holidays before using it for a deadline.

Limitations and common mistakes

  • Only Monday through Friday and supplied holidays are used; national calendars are not automatically loaded.

Frequently asked questions

How can I add working days to a date online?

Enter Starting date or select Try example. Review Working days, Holidays, comma-separated YYYY-MM-DD. Select Run tool and inspect the result before copying or downloading.

Where is my input processed?

The bundled tool processes input in your browser. It does not upload tool input to a conversion service. Other site plugins, analytics, advertising and browser extensions may have separate behavior.

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