Convert Gigayears to Microcenturies
Convert Gigayears (Ga) to Microcenturies (µcy) instantly and accurately.
Conversion Formula
µcy = Ga × 9999794661000
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.
About Microcenturies
A microcentury (µcy) = 10⁻⁶ of a Julian century = 3,155.76 s ≈ 52 min 35.76 s. Popularised by Richard Feynman, who told audiences a one-hour lecture was 'approximately one microcentury'. An 87-minute film ≈ 1.65 microcenturies. No formal SI recognition, but a favourite pedagogical example of SI prefixes applied to large bases. 1 µcy = 3,155.76 s = 52.596 min.
Quick Reference Table
| Gigayears (Ga) | Microcenturies (µcy) |
|---|---|
| 1 Ga | 10 × 1012 µcy |
| 2 Ga | 2 × 1013 µcy |
| 5 Ga | 5 × 1013 µcy |
| 10 Ga | 10 × 1013 µcy |
| 25 Ga | 2.5 × 1014 µcy |
| 50 Ga | 5 × 1014 µcy |
| 100 Ga | 10 × 1014 µcy |