Is It a Leap Year? Find Out Now
Leap years add an extra day to February, but the rules are trickier than you think (divisible by 4, except centuries, unless divisible by 400). Skip the mental gymnastics — type a year and get a definitive answer.
How to Use the Leap Year Checker
1
Enter a four-digit year (e.g., 2028).
2
The tool instantly tells you whether it is a leap year.
3
Review the explanation of which rule applied.
Frequently Asked Questions
What are the leap year rules?
A year is a leap year if it is divisible by 4, except for century years, which must also be divisible by 400. So 2000 was a leap year, but 1900 was not.
Why do leap years exist?
Earth's orbit takes approximately 365.25 days. Without leap years, the calendar would gradually drift out of sync with the seasons.
How far into the future does this work?
The Gregorian leap year rules apply indefinitely, so the tool works for any year you can type.