Leap Year Calculator: Is 2025 a Leap Year?
A leap year has 366 days instead of 365. It occurs every 4 years to keep the calendar aligned with Earth’s orbit. Use this tool to check any year instantly.
Leap Year Rules (Gregorian)
- Divisible by 4 → Leap year
- Divisible by 100 → Not a leap year
- Divisible by 400 → Leap year
Examples
- 2024: Yes (div by 4)
- 2025: No
- 1900: No (div by 100, not 400)
- 2000: Yes (div by 400)
Julian Calendar (Pre-1582)
Only rule: divisible by 4. No 100/400 exceptions.
Why Leap Years Matter
- Astronomy: Keeps seasons accurate
- Payroll: Affects monthly salaries
- Programming: Date logic in apps
- History: Julian vs Gregorian shift
Pro Tips
- Use Add Days for date math
- February 29 only in leap years
- Next leap year: 2028
Common Mistakes
- Forgetting the 100-year rule
- Using Julian rules after 1582
- Entering negative years
FAQs
Is 2025 a leap year? No — not divisible by 4.
What about year 0? Not in Gregorian calendar.
Why 400-year rule? Earth’s orbit is ~365.2422 days.
Conclusion
Never guess again. Our Leap Year Calculator is fast, accurate, and free. Check any year in seconds.
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