Leap Year Checker
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What is a leap year?
A leap year has 366 days instead of 365, with an extra day added to February. We need them because Earth's orbit takes roughly 365.25 days — without leap years, our calendar would drift and seasons would slowly shift out of place.
Born on February 29th?
The odds of being born on leap day are about 1 in 1,461 — that's the average number of days in four years (3 × 365 + 366). Only around 5 million people worldwide share a true February 29th birthday.
Famous leap day birthdays
Notable February 29th babies include Pope Paul III (1468), composer Gioachino Rossini, rapper Ja Rule, motivational speaker Tony Robbins, and actor Antonio Sabàto Jr.
Leap day babies in non-leap years
When there's no February 29th, most leap day babies celebrate on February 28th or March 1st — it's a personal choice. Some legally observe their birthday on the 28th; others wait for March 1st. Either way, they only get a "real" birthday every four years.
How do you calculate a leap year?
A leap year occurs when a year is divisible by 4. That extra day in February corrects for the fact that Earth takes approximately 365.25 days to orbit the Sun — without leap years our calendar would drift by about 6 hours every year, and seasons would slowly shift out of place.
There is an important exception: century years like 1800, 1900, and 2100 are not leap years even though they are divisible by 4, because the solar year is slightly less than 365.25 days. However, years divisible by 400 — such as 1600, 2000, and 2400 — are leap years, restoring the balance over longer cycles.
Leap years affect everyday life too. People born on February 29th, known as leaplings or leap day babies, technically only have a birthday every four years. In non-leap years they celebrate on either February 28th or March 1st depending on their country and personal preference.
Frequently asked questions
Is 2026 a leap year?
No — 2026 is not a leap year. It is not divisible by 4, so February 2026 has 28 days and the year has 365 days in total. Enter 2026 in the checker above to see the full explanation.
Is 2028 a leap year?
Yes — 2028 is a leap year. It is divisible by 4 and is not a century year, so February 2028 will have 29 days and the year will have 366 days in total.
When is the next leap year?
The next leap year is 2028. After that comes 2032, then 2036. The "Next leap years" grid above lists the upcoming leap years — click any year to check it instantly in the calculator.
Why do we have leap years?
Earth takes roughly 365.25 days to orbit the Sun, but our calendar counts only 365 days per year. Without a leap day every four years, we would lose about 6 hours annually — adding up to roughly one extra day every four years. Leap years keep our calendar aligned with the seasons.
What is a leap day baby called?
People born on February 29th are called leaplings, leap day babies, or leap year babies. With odds of about 1 in 1,461, only around 5 million people worldwide share a true February 29th birthday.
Was 2000 a leap year?
Yes — 2000 was a leap year. Although it is a century year, 2000 is divisible by 400, which overrides the century rule. February 2000 had 29 days.
Why is 1900 not a leap year?
1900 is divisible by 4 and by 100, but not by 400. The leap year rule excludes century years unless they are also divisible by 400. So 1900 had only 365 days, even though 1896 and 1904 were both leap years.
How many leap years are there in 100 years?
Most 100-year periods contain 24 leap years. A century normally has 25 years divisible by 4, but the century year itself is excluded unless divisible by 400 — removing one leap year. Periods that include a year like 2000 can have 25 leap years instead.