Convert years to seconds
Years to seconds. Enter a value to convert, or use the years to seconds chart further down the page.
1 year equals 31,556,952 seconds. Going the other way, 1 second = 3.168873851e-8 years.
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 years to seconds
To convert years to seconds, multiply the year value by 31556952. You can also divide by 3.168873851e-8 to get the same answer.
s = yr × 31556952
Worked example
Convert 30 yr to seconds:
30 yr = 946,708,560 s
years to seconds conversion chart
Use this years to seconds table for quick reference without typing anything.
| years (yr) | seconds (s) |
|---|---|
| 1 yr | 31,556,952 s |
| 2 yr | 63,113,904 s |
| 5 yr | 157,784,760 s |
| 10 yr | 315,569,520 s |
| 15 yr | 473,354,280 s |
| 30 yr | 946,708,560 s |
| 45 yr | 1,420,062,840 s |
| 60 yr | 1,893,417,120 s |
| 100 yr | 3,155,695,200 s |
| 1,000 yr | 31,556,952,000 s |
What is a year?
The mean Gregorian year is 365.2425 days, which accounts for the leap-year rules.
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.
Frequently asked questions
How many seconds are in a year?
1 years equals 31,556,952 seconds. Going the other way, 1 seconds is 3.168873851e-8 years.
How do you convert years to seconds?
To convert years to seconds, multiply the year value by 31556952. You can also divide by 3.168873851e-8 to get the same answer.
What is 10 years in seconds?
10 years equals 315,569,520 seconds. The conversion chart on this page lists the other values people look up most often.
Related time conversions
Convert years to other units
- seconds to years
- years to minutes
- years to hours
- years to days
- years to weeks
- years to months
- years to milliseconds
Convert other units to seconds
- minutes to seconds
- hours to seconds
- days to seconds
- weeks to seconds
- months to seconds
- milliseconds to seconds
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