learn.howToCalculate
learn.whatIsHeading
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.
Guia passo a passo
- 1Enter base date and interval
- 2Add specified days/months/years
- 3Return new date
Exemplos resolvidos
Entrada
Jan 1, 2026 + 90 days
Resultado
April 1, 2026
Accounts for leap years
Erros comuns a evitar
- ✕Not double-checking results
- ✕Ignoring edge cases
Perguntas frequentes
What does this calculator do?
Input values
How do I use this calculator?
System calculates
Pronto para calcular? Experimente a calculadora Date Add gratuita
Experimente você mesmo →