Leap Year Checker
Check if any year is a leap year. Accurate validation following the Gregorian calendar rules.
Enter Year
Verify if a year contains 366 days
Status
Gregorian Calendar Rule
February in this year has 28 days.
How are Leap Years determined?
To keep our calendar in alignment with Earth's revolutions around the Sun, a leap year is added every 4 years. However, the rule has specific exceptions:
- Rule 1: The year must be evenly divisible by 4.
- Rule 2: If the year is also divisible by 100, it is not a leap year...
- Rule 3: ...unless the year is also divisible by 400. Then it is a leap year.
Example: 2000 was a leap year (divisible by 400), but 1900 was not (divisible by 100 but not 400).
Leap Year Checker
Check if any year is a leap year. Accurate validation following the Gregorian calendar rules including the century exceptions.
Enter Year
Type the specific year you want to verify (e.g., 2024).
Check
The tool applies Gregorian calendar rules to determine if it's a leap year.
Result
Get an instant 'Yes/No' answer with an explanation of the math.
Frequently Asked Questions
To keep our calendar in alignment with the Earth's revolutions around the Sun.
A year is a leap year if it is divisible by 4, except for years divisible by 100 but not by 400.
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