Add example
10 March 2026 + 1 year + 2 months + 5 days → 15 May 2027.
Use this calculator to add or subtract years, months, and days from a start date. Pick a Start date, choose Add or Subtract, enter amounts, and read the result date.
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Enter a start date and amounts to calculate.
Month arithmetic follows calendar rules (for example, 31 Jan + 1 month may land on the last day of February).
What is add / subtract date?
An add or subtract date calculator shifts a calendar date forward or backward by whole years, months, and days — useful for deadlines, contract ends, and “what date is 90 days from now?”
Subtract example
1 July 2026 − 14 days → 17 June 2026.
Order of operations
This tool applies years, then months, then days — matching common calendar “offset” expectations.