Convert Seconds to Gigayears
Convert Seconds (s) to Gigayears (Ga) instantly and accurately.
Conversion Formula
Ga = s × 3.168873851e-17
About Seconds
The second (s) is the SI base unit of time, defined since 1967 as exactly 9,192,631,770 periods of the caesium-133 ground-state hyperfine transition at 0 K. Caesium fountain clocks realise this to ~10⁻¹⁶ (1 s lost per ~300 million years); optical lattice clocks (Sr, Yb) reach ~10⁻¹⁸. The second links to the metre via the defined speed of light c = 299,792,458 m/s exactly. 1 s = 1,000 ms = 1/60 min.
About Gigayears
A gigayear (1 Ga) = 10⁹ yr ≈ 3.156 × 10¹⁶ s - the timescale of stellar evolution and cosmology. Universe age: 13.787 ± 0.020 Ga (Planck CMB). Sun: 4.603 Ga old; red giant in ~5 Ga. A 0.1 M☉ red dwarf lives ~10,000 Ga. Uranium-238 half-life = 4.468 Ga (used in radiometric dating). Proton decay (GUT prediction): ~10³⁴ yr = ~10²⁵ Ga. 1 Ga = 10⁹ yr.
Quick Reference Table
| Seconds (s) | Gigayears (Ga) |
|---|---|
| 1 s | 3.169 × 10-17 Ga |
| 2 s | 6.338 × 10-17 Ga |
| 5 s | 1.584 × 10-16 Ga |
| 10 s | 3.169 × 10-16 Ga |
| 25 s | 7.922 × 10-16 Ga |
| 50 s | 1.584 × 10-15 Ga |
| 100 s | 3.169 × 10-15 Ga |