Leap Year Checker
Find out if a given year is a leap year.
The Tricky Rule of Leap Years, Simplified
Everyone knows a leap year happens every four years, but the rule is more complex than that. A year that is divisible by 100 is NOT a leap year, unless it is also divisible by 400. This is why 1900 was not a leap year, but 2000 was. This tool handles the full logic instantly, so you can check any year without doing the math.
How to Check Any Year
Using the tool is extremely simple:
- Enter Any Year: Type the year you want to check into the input box.
The calculator will immediately tell you if it's a leap year (366 days) or a common year (365 days).
Frequently Asked Questions (FAQ)
Q: Why do leap years even exist?
A: Leap years keep our modern calendar aligned with the Earth's orbit around the sun. An Earth year is about 365.24 days long. The extra day every four years (with exceptions) compensates for that extra quarter of a day, preventing our seasons from drifting over time.
Q: Is a leap year always every four years?
A: Almost always. The exception is for century years (like 1800, 1900, 2100). These years are only leap years if they can be divided by 400. This is why the year 2000 was a leap year, but 1900 was not.