A year is a unit of time defined as the period of time needed for the Earth to move through its orbit around the Sun. The course of a year sees the different seasons passing, weather changes, hours of daylight and so on. The average length of the calendar year is 365.2425 days or, to be even more precise, 31,556,925.9747 seconds. You can convert Years to other units here by enter amount of if into green input below. You can also check some basic conversions in Years Conversion Table.