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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.
Guida passo passo
- 1Enter base date and interval
- 2Add specified days/months/years
- 3Return new date
Esempi risolti
Ingresso
Jan 1, 2026 + 90 days
Risultato
April 1, 2026
Accounts for leap years
Errori comuni da evitare
- ✕Not double-checking results
- ✕Ignoring edge cases
Domande frequenti
What does this calculator do?
Input values
How do I use this calculator?
System calculates
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