To convert sidereal years to seconds, multiply the value by 31,558,100. To go the other way, multiply seconds by 3.16875 × 10⁻⁸ to get sidereal years.
| Sidereal Years (sid yr) | Seconds (s) |
|---|---|
| 1 sid yr | 31,558,100 s |
| 2 sid yr | 63,116,300 s |
| 3 sid yr | 94,674,400 s |
| 4 sid yr | 126,233,000 s |
| 5 sid yr | 157,791,000 s |
| 6 sid yr | 189,349,000 s |
| 7 sid yr | 220,907,000 s |
| 8 sid yr | 252,465,000 s |
| 9 sid yr | 284,023,000 s |
| 10 sid yr | 315,581,000 s |
| 12 sid yr | 378,698,000 s |
| 14 sid yr | 441,814,000 s |
| 15 sid yr | 473,372,000 s |
| 20 sid yr | 631,163,000 s |
| 21 sid yr | 662,721,000 s |
| 24 sid yr | 757,396,000 s |
| 25 sid yr | 788,954,000 s |
| 30 sid yr | 946,744,000 s |
| 40 sid yr | 1,262,330,000 s |
| 50 sid yr | 1,577,910,000 s |
| 60 sid yr | 1,893,490,000 s |
| 75 sid yr | 2,366,860,000 s |
| 80 sid yr | 2,524,650,000 s |
| 100 sid yr | 3,155,810,000 s |
| 200 sid yr | 6,311,630,000 s |
| 250 sid yr | 7,889,540,000 s |
| 300 sid yr | 9,467,440,000 s |
| 400 sid yr | 12,623,300,000 s |
| 500 sid yr | 15,779,100,000 s |
| 750 sid yr | 23,668,600,000 s |
| 1,000 sid yr | 31,558,100,000 s |
Sidereal year (sid yr). A sidereal year is 365.256363 days, one orbit of the Sun relative to the stars.
Second (s). The second is the SI base unit of time, defined by the caesium-133 atom.
There are 31,558,100 seconds in one sidereal year.
Multiply the number of sidereal years by 31,558,100. For example, 10 sidereal years equal 315,581,000 seconds.
One second equals 3.16875 × 10⁻⁸ sidereal years.
378,698,000 seconds. Other common values: 5 sidereal years = 157,791,000 seconds and 100 sidereal years = 3,155,810,000 seconds.