RapidCheck

Leap Year Checker

Check whether a year is a leap year.

Last updated: 12 Aug 2026

Quick answer

A year is a leap year if it is divisible by 4, except century years, which must be divisible by 400. So 2024 and 2000 are leap years, but 1900 is not. Enter a year above to check.

Check whether a year is a leap year (366 days). The rule: divisible by 4, but century years must be divisible by 400.

How to check for a leap year

  1. 1 Enter a year.
  2. 2 We apply the leap-year rule.
  3. 3 You instantly see whether it is a leap year.

Frequently asked questions

What is the leap year rule?
A year is a leap year if divisible by 4, except centuries, which must be divisible by 400 (so 2000 is, 1900 is not).
Why do we have leap years?
The Earth takes about 365.25 days to orbit the Sun, so an extra day is added every 4 years to keep the calendar aligned.
Is 2024 a leap year?
Yes, 2024 is divisible by 4 and is not a century year, so it is a leap year.

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