Leap Year Checker
Check if any given year is a leap year according to the Gregorian calendar.
In-Depth Guide
Everything you need to know
A Leap Year is a calendar year that contains an additional day—February 29th—added to keep the calendar year synchronized with the astronomical year or seasonal year.
The Rules of Leap Years:
1
Divisible by 4
Most years that are divisible by 4 are leap years.
2
The 100 Year Exception
If a year is divisible by 100, it is NOT a leap year...
3
The 400 Year Exception
...unless it is also divisible by 400. Then it IS a leap year.