Leap Year Checker
Check whether a given year has 366 days instead of 365.
2026 is not a leap year (365 days).
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How It Works
Enter a year to see whether it's a leap year.
A year is a leap year if divisible by 4, except century years, which must be divisible by 400
Example
2024 is a leap year. 1900 is not (divisible by 100 but not 400). 2000 is a leap year (divisible by 400).
Frequently Asked Questions
- Why isn't every year divisible by 4 a leap year?
- The extra rule for century years (divisible by 100 but not 400) keeps the calendar aligned with Earth's actual orbit, which is slightly less than 365.25 days.
- How often do leap years occur?
- Roughly every 4 years, with the century-year exception skipping 3 leap years every 400 years.
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