Leap Year Calculator
Verify whether a given calendar year contains 366 days and a February 29. Explains the Gregorian calendar leap year rule and displays the next 20 upcoming leap years.
How to calculate: Year 2024 & 2028
For example, 2000 was a leap year, but 1900 was not.
2028 has 366 days and includes February 29.
About Leap Year Calculator
Verify whether a given calendar year contains 366 days and a February 29. Explains the Gregorian calendar leap year rule and displays the next 20 upcoming leap years.
Primary Purpose: Check if a year is a leap year and understand the rule
How to Use the Leap Year Calculator
- 1Enter any calendar year (e.g. 2028 or 2032).
- 2Instant diagnosis verifies whether it is a leap year.
- 3Review upcoming leap years.
Formula & Methodology
For example, 2000 was a leap year, but 1900 was not.
Real-World Worked Examples
Year 2024 & 2028
Frequently Asked Questions
Why are century years like 1900 not leap years?
Because Earth orbit around the sun takes approximately 365.2422 days, adding a leap day every 4 years slightly overcompensates. Skipping century years not divisible by 400 corrects this calendar drift.