Leap Year Checker
Check whether a year is leap and find the next leap year.
FreeNo sign-upRuns on your device
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How to use this tool
Enter a year. A Gregorian leap year has 366 days and usually occurs every four years, with century exceptions.
Frequently asked questions
Why is 2100 not a leap year?
Century years must be divisible by 400, so 2000 was leap but 2100 will not be.