Determine if a year is a leap year and find next/previous leap years.
Calendar Check
Checking the alignment of the stars and the sun for AD 2026...
The Verdict
NO, IT IS NOT.
2026 has 365 days
Previous Leap2024
Next Leap2028
About this calculator
Overview
Leap years have 366 days (February 29). Occur every 4 years, except century years not divisible by 400. Keeps calendar aligned with Earth's orbit (365.2425 days).
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Pro Tips
2024, 2028, 2032 are leap years.
2100 is NOT a leap year (divisible by 100, not 400).
2000 WAS a leap year (divisible by 400).
Leap day added to February (29 days).
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Fun Facts
"Leap year tradition dates to Julius Caesar (45 BCE)."
"Gregorian calendar refined leap year rules (1582)."
"Without leap years, calendar drifts 6 hours yearly."
"February 29 babies celebrate on Feb 28 or Mar 1 in non-leap years."
Formula: Leap Year: divisible by 4 AND (not by 100 OR divisible by 400)
