Is Leap Year

Is Leap Year

Determine whether a given year is a leap year.

How it works

A leap year occurs every 4 years, with some exceptions:

• Rule 1: If a year is divisible by 4, it's a leap year
• Rule 2: EXCEPT if it's divisible by 100, then it's NOT a leap year
• Rule 3: EXCEPT if it's divisible by 400, then it IS a leap year

This calculator returns:

• Is Leap Year: Whether the year is a leap year
• Days in Year: 365 for regular years, 366 for leap years
• Days in February: 28 for regular years, 29 for leap years

Use cases

• Calendar applications
• Date validation
• Age calculations involving February 29
• Financial calculations requiring exact day counts
• Historical date verification

Examples

• 2024: Leap year (divisible by 4)
• 2025: Not a leap year
• 2000: Leap year (divisible by 400)
• 1900: Not a leap year (divisible by 100 but not 400)
• 2100: Not a leap year (divisible by 100 but not 400)