Convert Years to Seconds
One year equals 31,557,600 seconds. Type any value to convert years to seconds instantly — with a full reference table below.
Convert Years to Seconds
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Conversion formula
To convert years to seconds, multiply by 31,557,600. One year equals 31,557,600 s, and one second equals 0 yr.
Years to Seconds table
About converting Years to Seconds
Years (yr) and Seconds (s) are both units of time. The exact factor is 1 yr = 31,557,600 s, so multiply by 31,557,600 to go from years to seconds (or divide to go back).
The conversion is exact and runs entirely in your browser. Need the reverse? Use the Seconds to Years converter, or the full unit converter for every unit at once.
Frequently asked questions
How many seconds are in one year?
One year equals 31,557,600 seconds.
How do I convert years to seconds?
Multiply the number of years by 31,557,600. For example, 10 years = 315,576,000 seconds.
What is 5 years in seconds?
5 years is 157,788,000 seconds.