Add Years to Date
What date is N years from now?
Years added on the calendar, with 29 February clamped to the 28th in a common year, and the resulting weekday shown.
Questions people ask
The things that come up about add years to dates, answered plainly.
What is 29 February plus one year?
28 February, because the target year has no 29th. Add four years instead and you land on 29 February again — unless you have crossed a century year that is not a leap year, like 1900 or 2100.
Why does the weekday move by one or two?
A common year is 52 weeks and one day, so a date moves forward one weekday a year. A leap year adds two. That is why the same date returns to the same weekday on a 28-year cycle.
Related tools
Move a date forwards or backwards by a span, with the calendar's rules applied.
Subtract YearsYears taken off a date, with leap-day clamping, the weekday, and the age that span would make someone.
Add Months to DateMonths added on the calendar, with the end-of-month case handled explicitly — 31 January plus one month is 28 February, and the page says so rather than silently landing in March.
Years Between DatesWhole years, then the months and days on top — the same rule an age is worked out by, so an anniversary counts on the day and not the day before.
Leap Year CheckerThe answer, the rule that produced it, the next and previous leap years, and the century exceptions that catch people out.