Convert Microcenturies to Millennia
Convert Microcenturies (µcy) to Millennia (ka) instantly and accurately.
Conversion Formula
ka = µcy × 1.000020534e-7
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.
About Millennia
A millennium (1 ka) = 1,000 Gregorian years ≈ 3.156 × 10¹⁰ s. Standard unit in archaeology and Quaternary geology: Neolithic transition ~10-12 ka BP; Last Glacial Maximum ~21 ka BP; Homo sapiens leaving Africa ~60-70 ka BP. Milankovitch cycles include the 41 ka obliquity and ~100 ka eccentricity cycle. EPICA Antarctic ice core spans ~800 ka. Precession completes ~26 ka. 1 ka = 1,000 yr.
Quick Reference Table
| Microcenturies (µcy) | Millennia (ka) |
|---|---|
| 1 µcy | 1 × 10-7 ka |
| 2 µcy | 2 × 10-7 ka |
| 5 µcy | 5 × 10-7 ka |
| 10 µcy | 1 × 10-6 ka |
| 25 µcy | 2.5 × 10-6 ka |
| 50 µcy | 5 × 10-6 ka |
| 100 µcy | 1 × 10-5 ka |