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THE FEUTEX TOOLKIT

Business Day Planner

Add working days to a start date, excluding weekends and your own holiday list.

Date and Time workspace● Runs in your browser
01 Your input
02 Your result
View or copy raw result data
FormulaAdvance calendar dates, counting only eligible weekdays

How to use this tool

  1. Load the example or enter your own values in the labeled fields.
  2. Run the tool and review the result and assumptions.
  3. Copy or download the result for your workflow.

Try this example

{"start": "2026-01-02", "days": 5, "holidays": "2026-01-06"}

Accuracy and scope

Start day is excluded. Holidays must be supplied; no automatic national holiday calendar.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.