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Leap year checker

Leap year ↔ divisible by 4, except centuries unless divisible by 400.

Status
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Days in year
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Next leap year
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How to use Leap year checker

  1. Enter a year.
  2. The tool checks it against the leap year rule: divisible by 4, except century years, which must be divisible by 400.

Example

Is 2000 a leap year?: Yes — it's divisible by 400. 1900 was NOT a leap year despite being divisible by 4, because century years need to be divisible by 400.

About this tool

Leap year checker is a single-purpose utility on instant.tw, a free toolbox of calculators, converters, generators, and quick lookups. Everything works in your browser — nothing is uploaded, nothing is stored on a server unless explicitly noted.

Category: Date & Time Tools. Browse more Date & Time Tools tools.