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A date addition calculator adds or subtracts days, weeks, months, or years from a given date to find a resulting date. Useful for calculating deadlines (30 days from today), due dates, warranties (12 months from purchase date), and scheduling. Month addition is ambiguous for months 29–31 days.

Пошаговое руководство

  1. 1Enter base date and interval
  2. 2Add specified days/months/years
  3. 3Return new date

Решённые примеры

Ввод
Jan 1, 2026 + 90 days
Результат
April 1, 2026
Accounts for leap years

Распространённые ошибки

  • Not double-checking results
  • Ignoring edge cases

Часто задаваемые вопросы

What does this calculator do?

Input values

How do I use this calculator?

System calculates

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