Workday date calculator

  1. Input
  2. Options
  3. Result

Workday date calculator

Add, subtract or count calendar days and workdays with optional holiday exclusions.

Input

The start date is excluded. Only the selected weekends and dates entered below are days off; national holidays are not added automatically. Calendar months end on the last valid day when necessary.

Calculate workdays and date shifts

Add or subtract days, weeks, months and working days from a selected date.

Holiday dates can be excluded when you need a practical business-day estimate.

Quick start

Add working days or compare dates with an explicit calendar.

  1. Choose the operation and dates
  2. Set weekends and your holiday dates
  3. Calculate and save CSV or JSON
✓ The tool runs directly in the browser and is ready for quick checks without installing software.
✓ Input can be cleared and recalculated immediately, which is useful for repeated small tasks.
✓ Use fullscreen mode when you need more space for long text, structured data or large result blocks.
✓ Copy buttons are available on generated output so results can be reused in code, documents or support chats.
✓ Most operations are deterministic: the same input and options produce the same output.
✓ For sensitive content, prefer local browser tools and review the result before sharing it further.

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