Leap Year Checker
Check if any year is a leap year with the real Gregorian rules, and find the next and previous leap years — free, fast and private.
Enter a year and click Check Year.
How to use Leap Year Checker
- Enter any year.
- Click Check Year.
- See whether it is a leap year and why.
- Use the range option to list leap years between two years.
Note: this tool runs in your browser. Nothing is uploaded.
Frequently Asked Questions
Is the Leap Year Checker free?
Yes, it is 100% free with no sign-up.
What makes a year a leap year?
A year is a leap year if it is divisible by 4, except century years, which must be divisible by 400. So 2000 was a leap year but 1900 was not.
Is 2026 a leap year?
No. 2026 is not divisible by 4, so it is a normal year with 365 days. The next leap year is 2028.
How many days does a leap year have?
A leap year has 366 days, with an extra day on 29 February.