Leap Year Calculator
Determine if any year is a leap year and understand the patterns and rules behind leap years.
Check a Year
Enter any year to check if it's a leap year
Upcoming Leap Years
2028
2032
2036
2040
2044
Leap Year Rules
Rule 1: If divisible by 4, it's usually a leap year
Rule 2: If divisible by 100, it's not a leap year
Rule 3: Unless it's also divisible by 400, then it is a leap year
Examples:
• 2000: Leap (divisible by 400)
• 1900: Not leap (divisible by 100)
• 2024: Leap (divisible by 4)
• 2000: Leap (divisible by 400)
• 1900: Not leap (divisible by 100)
• 2024: Leap (divisible by 4)
Why Leap Years?
• Earth takes 365.2422 days to orbit the Sun
• Without leap years, seasons would shift
• Leap years keep our calendar aligned
• Julius Caesar introduced leap years in 46 BC
• Pope Gregory XIII refined the system in 1582
Leap Year Facts
• February 29 is called "Leap Day"
• About 4 million people are born on leap day
• Leap day babies are called "Leaplings"
• Ireland has a tradition where women can propose on leap day
• The next century year that won't be a leap year is 2100
Recent Leap Years
2008
2012
2016
2020
2024