Convert seconds to years
seconds to years. Enter a value to convert, or use the seconds to years chart further down the page.
1 second equals 3.16887e-8 years. Going the other way, 1 year = 31,557,000 seconds.
Note. Months and years are not fixed lengths. This converter uses the average Gregorian year of 365.2425 days and the average month of one twelfth of that.
How to convert seconds to years
To convert seconds to years, multiply the second value by 3.168873851e-8. You can also divide by 31556952 to get the same answer.
yr = s × 3.168873851e-8
Worked example
Convert 30 s to years:
30 s = 0.000000950662 yr
seconds to years conversion chart
Use this seconds to years table for quick reference without typing anything.
| seconds (s) | years (yr) |
|---|---|
| 1 s | 3.16887e-8 yr |
| 2 s | 6.33775e-8 yr |
| 5 s | 0.000000158444 yr |
| 10 s | 0.000000316887 yr |
| 15 s | 0.000000475331 yr |
| 30 s | 0.000000950662 yr |
| 45 s | 0.00000142599 yr |
| 60 s | 0.00000190132 yr |
| 100 s | 0.00000316887 yr |
| 1,000 s | 0.0000316887 yr |
What is a second?
The second is the SI base unit of time, defined by 9,192,631,770 periods of the radiation of the caesium-133 atom.
What is a year?
The mean Gregorian year is 365.2425 days, which accounts for the leap-year rules.
Frequently asked questions
How many years are in a second?
1 seconds equals 3.16887e-8 years. Going the other way, 1 years is 31,557,000 seconds.
How do you convert seconds to years?
To convert seconds to years, multiply the second value by 3.168873851e-8. You can also divide by 31556952 to get the same answer.
What is 10 seconds in years?
10 seconds equals 0.000000316887 years. The conversion chart on this page lists the other values people look up most often.
Related time conversions
Convert seconds to other units
- years to seconds
- seconds to minutes
- seconds to hours
- seconds to days
- seconds to weeks
- seconds to months
- seconds to milliseconds
Convert other units to years
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