How to use the Leap Year Checker
Enter the year and the result appears straight away. Everything runs in your browser, so nothing you type is uploaded.
How it works
Divisible by 4, except centuries unless divisible by 400.
Examples
- With the default values
2026 is not a leap year.
- With year set to 4052
4052 is a leap year.
Limitations and assumptions
Review inputs, units and assumptions before relying on the result. Detailed content, accessibility and edge-case review remains ongoing.
Frequently asked questions
What does the Leap Year Checker do?
Check whether a year is a Gregorian leap year.
How does the Leap Year Checker work?
Enter the year and the result appears straight away. Everything runs in your browser, so nothing you type is uploaded.
What should I keep in mind when using the Leap Year Checker?
Review inputs, units and assumptions before relying on the result.
Can I see an example of the Leap Year Checker?
Uses Gregorian calendar rules.
Is the Leap Year Checker free to use?
Yes. It is free, needs no account and runs in your browser.