Add months or years to a date
Shift calendar months or years with an explicit rule for a missing month-end date.
Preparing your tool…
How it works
Anchor to the original day. Clamp to the final day or reject a missing date. Negative amounts move backwards.
Example
2027-01-31 plus one month becomes 2027-02-28 when clamped.
What should I check before using the result?
Calendar months are not fixed 30-day durations.