Leap Year Calculator
Checks whether a given year is a leap year.
Lilu Baba's Leap Year Calculator checks any year against the standard Gregorian leap year rule instantly.
How to use this calculator
- Enter any year.
- It updates instantly to show whether that year is a leap year.
Result
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FAQ
Leap Year Calculator — frequently asked questions
A year is a leap year if it's divisible by 4, except century years (divisible by 100), which must also be divisible by 400 to be a leap year.
This adjustment keeps the calendar aligned with the solar year more precisely over long periods — without it, the calendar would drift.