Leap Year Checker
Enter any year to instantly find out whether it's a leap year, plus the next 5 leap years that follow. Free online leap year checker.
2024 is a leap year
2024 has 366 days, with an extra day in February (29 days).
Next 5 leap years from 2024:
2024, 2028, 2032, 2036, 2040
Free Leap Year Checker
Enter any year to instantly find out whether it's a leap year, plus a list of the next 5 leap years that follow it.
How to Use It
Type a year into the input box — the result updates instantly, along with a short list of upcoming leap years.
The Leap Year Rule
A year is a leap year if it's divisible by 4, except century years (divisible by 100), which are only leap years if they're also divisible by 400. This is why 2000 was a leap year, but 1900 and 2100 are not.
Example
2024 is a leap year (divisible by 4, not a century year). 1900 is not a leap year (divisible by 100 but not by 400). 2000 is a leap year (divisible by 400).
Common Use Cases
- Checking whether February has 28 or 29 days in a given year.
- Verifying date-calculation logic while writing or testing code.
- Planning events or birthdays that fall on February 29.
FAQs
Why are century years treated differently?
The extra "divisible by 100, except by 400" rule corrects a small drift in the basic every-4-years rule so the calendar stays aligned with Earth's actual orbit over long periods — this is the Gregorian calendar's leap year rule.
Does this work for years before 1582?
The calculation applies the modern Gregorian rule to any year you enter, including negative or ancient years, though the Gregorian calendar wasn't actually in use before 1582.
What years are the next few leap years after 2024?
2028, 2032, 2036, 2040, and 2044 are all leap years — enter any starting year above to see its own next five.