Leap Year Calculator
Is a year a leap year
Use this when you need a fast, accurate result — no sign-up, works entirely in your browser.
Is it a leap year?—
How to Use
- Enter your details into the fields above.
- Click the calculate button to get your result instantly.
- Use the clear button to start a new calculation.
Example
- 2024 → Yes, 2024 is a leap year
- 2100 → No, 2100 is not a leap year
- 2000 → Yes, 2000 is a leap year
Formula
A year is a leap year when it is divisible by 4, except century years, which must also be divisible by 400. That is why 2000 was a leap year but 2100 will not be. A leap year has 366 days because February gets a 29th.
About Leap Year Calculator
Is a year a leap year. This free online tool gives you fast, accurate results without registration or downloads.
Everything runs locally in your browser, so your data is never uploaded or stored — privacy first.
Frequently Asked Questions
Is the Leap Year Calculator free to use? +
Yes, it is completely free with no registration or download required.
Is my date data private? +
Yes. All date calculations happen locally in your browser. Nothing is uploaded or stored.
Does the Leap Year Calculator account for time zones? +
For time-based tools, calculations use your local device time. Date tools operate on the dates you enter.