Leap Year Checker
Check if a year is a leap year
🔒 Files never leave your browser
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Enter a year to check.
Total Days
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February Days
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Leap Year Rules
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Next 10 Leap Years
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How to Use Leap Year Checker
Enter year
Enter any year.
Check
See if it is a leap year.
Browse
See nearby leap years.
Why Choose AllTools Leap Year Checker?
- ✓ Leap year check
- ✓ Next leap year
- ✓ Year range list
- ✓ Rule explanation
- ✓ Instant result
- ✓ No data stored
Why Use This Tool
- ★ Instant calculations with no server processing
- ★ Completely free with no usage limits
- ★ No account or registration required
- ★ Handles timezones and daylight saving automatically
- ★ Works on any device with a modern browser
Related Resources
Frequently Asked Questions
What is the leap year rule? ▼
Divisible by 4, except centuries which must be divisible by 400. So 2000 was a leap year but 1900 was not.
Can I see a list of leap years? ▼
Yes. Enter a year range to see all leap years within that period.
Does this work on mobile? ▼
Yes. All AllTools tools are fully responsive and work on phones and tablets.
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