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Leap Year Calculator

Because seasons do not end on whole days, every four years the year has an extra day, February 29, to avoid the calendar drifting from the seasons it marks. These years with extra days are called leap years, and this page will help you calculate various things relating to them.

Next Leap Year

Check to see if the current year is a leap year, and if not, when the next leap year will occur.

Test a Single Year

Test any year in the past or future to see if it was or will be a leap year.

Please enter a valid year

Find a Range of Leap Years

Here you can enter a range of years and this page will calculate every leap year that occurred between those two years (inclusive.)

Calculate from

Please enter a valid year in both fields, and make sure the first year comes before the second year.