Add or Subtract Months
DATES & TIME
Add or Subtract Months
Move a date by months, with end-of-month clamping.
UNDERSTAND YOUR RESULT
How it works
Move a date by months, with end-of-month clamping.
THE CALCULATIONshift months and clamp to the last valid day
Using this calculator
Enter date, signed months. shift months and clamp to the last valid day.
What to keep in mind
Gregorian calendar, years 1900–9999. Calendar dates use UTC to avoid daylight-saving shifts. Business days mean Monday–Friday; holidays are not excluded.
Frequently asked questions
Are my entries saved?
No. Calculator inputs remain in the current page and are cleared when you reload or leave. The tools do not upload your entries.
Why are results rounded?
The display is rounded for readability. Calculations use unrounded intermediate values. An estimate should not be interpreted as an exact measurement.