Add or Subtract Years
DATES & TIME
Add or Subtract Years
Move a date by years, handling leap-day anniversaries.
UNDERSTAND YOUR RESULT
How it works
Move a date by years, handling leap-day anniversaries.
THE CALCULATIONshift years and clamp February 29 when needed
Using this calculator
Enter date, signed years. shift years and clamp February 29 when needed.
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.