Leap Year Checker - Free, Instant, In Your Browser
Enter a year to check whether it is a leap year (divisible by 4, except century years unless divisible by 400).
How to use Leap Year Checker
- 1Paste your text or data into the input box above.
- 2Leap Year Checker runs instantly, right in your browser.
- 3Copy the result or use it directly.
Your file is processed in your browser and is never uploaded.
Frequently Asked Questions
How does this work?
Using a standard, well-established method - see the description above for details.
Is my data sent to a server?
No - everything runs entirely in your browser with JavaScript. Nothing is uploaded.