Add/Subtract Business Days (Custom Holidays)

Add or subtract working business days from a starting date, skipping weekends and custom public holidays.

How It Works & Processing Standards

Add or subtract working business days from a starting date, skipping weekends and custom public holidays.

Your input data is never sent to any server and is securely processed on your device.

Current Limits

  • Maximum input length: 100,000 characters

Add/Subtract Business Days (Custom Holidays) is a 100% free, browser-based online utility. All calculations and file conversions run locally inside your browser (Local-First) without sending data to remote servers, keeping your documents and inputs strictly private.

How to Use Add/Subtract Business Days (Custom Holidays)

  1. 1
    Set Reference DateInput starting date.
  2. 2
    Set Days to OffsetEnter business days count (positive to add, negative to subtract).
  3. 3
    Input HolidaysPaste custom holiday dates.
  4. 4
    Copy ResultRead target date and weekday.

Common Use Cases

  • Corporate legal response deadlines and international logistics arrival forecasts
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