Leap Year Checker: Is This Year a Leap Year?

Check whether a year has 29 February. The answer explains the rule (every 4 years, except century years not divisible by 400) and lists the leap years just before and after. Check many years at once, one per line.

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How to check a leap year

  1. Type a year (or several, one per line).
  2. The answer and the reason appear at once.
  3. See the leap years before and after it.

Questions

Why is 1900 not a leap year but 2000 is?

Century years are leap years only when divisible by 400. 2000 ÷ 400 works; 1900 ÷ 400 does not.

When is the next leap year?

2028, then 2032 and 2036.

Is my data private?

Yes. Everything happens inside your own browser: nothing you type or choose is uploaded to us or anyone else.

Is it free?

Completely free, with no sign-up, no watermark and no limit on how many times you use it. Light ads keep the site running.