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Leap Year Checker

Is this year a leap year? When's the next one?

2026
Not a leap year
365 days

Next 5 leap years

  • 2028
  • 2032
  • 2036
  • 2040
  • 2044

Recent leap years

  • 2024
  • 2020
  • 2016
  • 2012
  • 2008

The rule

  • Divisible by 4 → leap year (1996, 2000, 2024)
  • Divisible by 100 → NOT leap year (1900, 2100)
  • Divisible by 400 → leap year (1600, 2000)

Gregorian calendar leap year rule. The 100/400 exception keeps the calendar in sync with the Earth's actual orbit (365.2425 days). 1900 was not a leap year; 2000 was. The next 100-but-not-400 year is 2100.

About

Pick any year. The tool checks the Gregorian leap year rule (divisible by 4, except century years not divisible by 400) and lists the next 5 and previous 5 leap years.

How to use

  1. Type a year.

FAQ

Why isn't 1900 a leap year?+

Centuries are leap years only if divisible by 400. 2000 was, 1900 wasn't, 2100 won't be, 2400 will. Keeps the calendar synced with Earth's actual orbit.