Everyday Life

Is It a Leap Year? — Leap Year Checker

Built by Kevin Glover · @gloverbuilds · Verified formula

Check if any year is a leap year. See the next leap year and the rule behind the calendar.

📅 Updated April 2026 ✅ Formula verified 📖 4 min read 🆓 Free · No sign-up

In this article

The Leap Year Rule
Leap Year Fun Facts

Rules

÷4: yes। EXCEPT ÷100: no। EXCEPT ÷400: yes। 2024: yes। 1900: no। 2000: yes। 29 Feb corrects for 365.2422 day year। Next: 2028, 2032।

29 Feb

Born on 29 Feb: 1 in 1,461 chance (~0.07%)। Legally celebrate on 28 Feb or 1 Mar in non-leap years।

⚡ CalcWolf Insight

The Gregorian calendar is so accurate that it only drifts by 1 day every 3,236 years. The Julian calendar it replaced drifted by 1 day every 128 years. By the time the Gregorian calendar was adopted in 1582, the Julian calendar had drifted by 10 days.

Frequently asked questions

2024?▾

Yes। Next: 2028।

Born 29 Feb?▾

~0.07% chance। Legal birthday: varies by jurisdiction।

✓ Math logic verified against primary sources → See our verification process

Kevin Glover · @gloverbuilds

Founder, CalcWolf · GLVTS · Blickr

All formulas sourced from primary references — IRS publications, peer-reviewed research, and official standards. Results are tested against independent reference calculators before publishing. Rates and brackets updated when official sources change. Editorial policy →