Direct conversion
Convert second [s] to year (average Gregorian) [yr] instantly with formula, examples, chart, and FAQs.
1 second [s] = 3.168874E-8 year (average Gregorian) [yr]
1 second [s] = 3.168874E-8 year (average Gregorian) [yr]
Example: 1 second [s] equals 3.168874E-8 year (average Gregorian) [yr].
Time conversions use second as the reference unit. Calendar-style values such as average month and average Gregorian year are approximate by definition.
Displayed results are rounded for readability. The calculator keeps enough precision for everyday use and switches to scientific notation for very large or very small values. Last reviewed: 2026-05-21.
The second is the SI base unit of time.
HistoryThe second moved from astronomical definitions to an atomic definition for high precision.
Current useSeconds are used in science, sports timing, computing, navigation, media, and everyday clocks.
A year is a calendar time unit; conversion pages use an average year for fixed calculations.
HistoryYears are based on Earth orbit and are organized through civil calendar systems.
Current useYears are used for age, finance, warranties, education, contracts, planning, and historical timelines.
| second [s] | year (average Gregorian) [yr] |
|---|---|
| 1 | 3.168874E-8 |
| 2 | 6.337748E-8 |
| 5 | 1.584437E-7 |
| 10 | 3.168874E-7 |
| 20 | 6.337748E-7 |
| 25 | 7.922185E-7 |
| 50 | 0.000002 |
| 100 | 0.000003 |
| 1000 | 0.000032 |
Use this formula: 1 second [s] = 3.168874E-8 year (average Gregorian) [yr] Enter your value in the calculator and the result updates instantly.
1 second [s] equals 3.168874E-8 year (average Gregorian) [yr].
Yes. Use the swap button in the calculator or open the related reverse conversion link when it is listed on this page.