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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.

ステップバイステップガイド

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

解いた例

避けるべきよくある間違い

• ✕Not double-checking results
• ✕Ignoring edge cases

よくある質問