Ensure
Date & Time

Leap Year Checker

Check whether a year has 366 days, and see which years nearby do.

Not a leap year

2026 does not divide by 4, so it is not a leap year.

365 days

Previous leap year

2024

Next leap year

2028

Leap years in a range

2000200420082012201620202024202820322036204020442048

Guides that cover this

Timestamps, time zones and the hour that happens twiceWhat Unix time actually counts, how ISO 8601 offsets differ from IANA time zones, what daylight saving does to alarms and durations, and where storing UTC is the wrong answer.

Related tools

Unix Timestamp Converter
Convert Unix timestamps to readable dates and back.
Date & Time
Date Difference
Count the days, weeks, months and years between two dates.
Date & Time
Duration Converter
Convert a duration between milliseconds, seconds, minutes, hours, days and weeks.
Date & Time
Weekday Calculator
Find which weekday a date falls on, plus its week and quarter.
Date & Time