Direct conversion
Convert second [s] to common year [common yr] instantly with formula, examples, chart, and FAQs.
1 second [s] = 3.170979E-8 common year [common yr]
1 second [s] = 3.170979E-8 common year [common yr]
Example: 1 second [s] equals 3.170979E-8 common year [common 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.
The common year (common yr) is a time unit used to express measurements in this converter.
HistoryThis unit is included because it appears in practical measurement systems, technical references, product specifications, or everyday conversion needs.
Current useUse common year when comparing time values, checking specifications, converting between systems, or preparing quick estimates.
| second [s] | common year [common yr] |
|---|---|
| 1 | 3.170979E-8 |
| 2 | 6.341958E-8 |
| 5 | 1.58549E-7 |
| 10 | 3.170979E-7 |
| 20 | 6.341958E-7 |
| 25 | 7.927448E-7 |
| 50 | 0.000002 |
| 100 | 0.000003 |
| 1000 | 0.000032 |
Use this formula: 1 second [s] = 3.170979E-8 common year [common yr] Enter your value in the calculator and the result updates instantly.
1 second [s] equals 3.170979E-8 common year [common yr].
Yes. Use the swap button in the calculator or open the related reverse conversion link when it is listed on this page.