Second to Year
Convert Second to Year instantly. Free online astronomy unit converter with exact formula, conversion table and FAQ.
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Convert astronomical length, mass, time, and distance units by compatible family.
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Formula
year = second × 3.16887385e-8
second = year × 3.1556952e+7
Conversion table
| 1 s | 3.16887385e-8 yr |
| 5 s | 1.58443693e-7 yr |
| 10 s | 3.16887385e-7 yr |
| 20 s | 6.3377477e-7 yr |
| 50 s | 1.58443693e-6 yr |
| 100 s | 3.16887385e-6 yr |
| 500 s | 1.58443693e-5 yr |
| 1,000 s | 3.16887385e-5 yr |
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Frequently asked questions
What is the source unit in this conversion?
The source unit is the second (s). The second is the SI base unit of time.
What is the destination unit in this conversion?
The destination unit is the year (yr). A year uses the average Gregorian year of 365.2425 days.
How do I convert second to year?
Multiply the second value by 3.16887385e-8. For example, 10 s × 3.16887385e-8 = 3.16887385e-7 yr.
Is the second to year conversion exact?
Yes. Both units have a fixed, defined relationship to the astronomy converter's time base unit, so the conversion factor is exact rather than a measured approximation.
Where is this conversion commonly used?
It's used in astronomy, physics, and space science whenever a time value expressed in second needs to be compared with, or reported in, year.
Can I convert year back to second?
Yes. Multiply the year value by 3.1556952e+7 to get second.
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About this conversion
This page converts second (s) to year (yr) within the astronomy converter.
The second is the SI base unit of time.
A year uses the average Gregorian year of 365.2425 days.
The formula is year = second × 3.16887385e-8, based on each unit's fixed relationship to the astronomy converter's time base unit.
The conversion is exact, since it relies on a fixed numerical ratio between the two units rather than a measured or approximate value.
Use the calculator above for instant results, or the table below for common second values already converted to year.