How many year in 1 second?
The answer is 3.17097919838E-8.

We assume you are converting between **year** and **second**.

You can view more details on each measurement unit:

year or
second

The SI base unit for **time** is the second.

1 year is equal to 31536000 second.

Note that rounding errors may occur, so always check the results.

Use this page to learn how to convert between years and seconds.

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You may also want to find out how many days
are between two dates on the calendar. Use the
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to get your age in days or measure the duration of an event.

A year is the time between two recurrences of an event related to the orbit of the Earth around the Sun. By extension, this can be applied to any planet: for example, a "Martian year" is a year on Mars.

The second (symbol s) is a unit for time, and one of seven SI base units. It is defined as the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium-133 atom at zero kelvins.

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