Convert Decades to Gigayears
Convert Decades (dec) to Gigayears (Ga) instantly and accurately.
Conversion Formula
Ga = dec × 1.000000000e-8
About Decades
A decade = exactly 10 Gregorian years = 315,569,520 s. Climate scientists compute 10-year running means to remove interannual variability; IPCC reports compare decadal temperature anomalies. Moore's Law predicted ~10× transistor density increase per decade. US Census counts are constitutionally mandated each decade. Cultural periods are colloquially labelled by decade (the 1960s, the 1980s). 1 decade = 10 yr.
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
| Decades (dec) | Gigayears (Ga) |
|---|---|
| 1 dec | 1 × 10-8 Ga |
| 2 dec | 2 × 10-8 Ga |
| 5 dec | 5 × 10-8 Ga |
| 10 dec | 1 × 10-7 Ga |
| 25 dec | 2.5 × 10-7 Ga |
| 50 dec | 5 × 10-7 Ga |
| 100 dec | 1 × 10-6 Ga |