How many second in 1 year?
The answer is 31536000.
We assume you are converting between second and year.
You can view more details on each measurement unit:
second or year
The SI base unit for time is the second.
1 second is equal to 3.17097919838E-8 year.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between seconds and years.
Type in your own numbers in the form to convert the units!
You may also want to find out how many days are between two dates on the calendar. Use the date calculator to get your age in days or measure the duration of an event.
You can do the reverse unit conversion from year to second, or enter any two units below:
I'm feeling lucky, show me some random units.
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.
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.
ConvertUnits.com provides an online conversion calculator for all types of measurement units. You can find metric conversion tables for SI units, as well as English units, currency, and other data. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. Examples include mm, inch, 100 kg, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!