📅 Leap Year Checker
Is a given year a leap year? Enter any year and get an instant yes/no answer, along with the specific rule that applies — plus the nearest leap years before and after it.
Is a given year a leap year? Gregorian rule, century exception included.
How the Leap Year Checker works
A year is a leap year if it's divisible by 4, except century years (divisible by 100), which are only leap years if also divisible by 400 — which is why 2000 was a leap year but 1900 and 2100 are not.
Step-by-step calculation
- 1Enter a year.
- 2Check: divisible by 4?
- 3Century years must also be divisible by 400.
- 4Read whether it is a leap year.
Worked example
2024 is a leap year (divisible by 4). 1900 is not (divisible by 100 but not 400). 2000 is (divisible by 400).
Leap Year Checker examples
| Year | Result |
|---|---|
| 1900 | 1900 is NOT a leap year |
| 2000 | 2000 is a leap year |
| 2024 | 2024 is a leap year |
| 2026 | 2026 is NOT a leap year |
| 2028 | 2028 is a leap year |
Other inputs kept at the calculator's default values. Results calculated by this calculator.
Why use a Leap Year Checker?
Check February 29 dates, schedules and date calculations.
Important factors that can affect your results
- The century rule (1900 was not a leap year, 2000 was).
- Calendars other than the Gregorian.
- Typing a 2-digit year.
Frequently asked questions
Why isn't every year divisible by 4 a leap year?
Century years are an exception — they're only leap years if divisible by 400, which corrects a small long-term drift in the calendar.
Is 2000 a leap year?
Yes — it's divisible by 400, so the century exception doesn't apply.
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Last reviewed November 2026 · How we build and check our tools · Report a problem