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Leap Year Calculator

Whether a year is a leap year, with the next ones and the rule explained.

Enter values

Results update as you type.

Result

Is 2026 a leap year?

No

A year is a leap year if it divides by 4, except centuries, unless they divide by 400 — which is why 1900 was not and 2000 was.

Days in the year
365
Days in February
28
Reason
Not divisible by 4
Previous leap year
2,024
Next leap years
2028, 2032, 2036, 2040, 2044
Weeks in the year
52.14

About the Leap Year Calculator

Whether a year is a leap year, with the next ones and the rule explained.

Also known as: is it a leap year, leap year checker, 366 days year, february 29 calculator.

How to use this calculator

  1. Enter year.
  2. The result updates instantly as you type — press Calculate (or Enter) at any time.
  3. Review the breakdown shown under the main result.
  4. Use Copy result or Share to save the answer or send a link with your inputs.

Formula

leap = (year % 4 = 0 and year % 100 ≠ 0) or year % 400 = 0

Worked example

Using the values pre-filled in the calculator above:

  • Year = 2,026

the calculator returns:

  • Is 2026 a leap year?: No
  • Days in the year: 365
  • Days in February: 28
  • Reason: Not divisible by 4