Convert Centuries to Millennia
Convert Centuries (cent) to Millennia (ka) instantly and accurately.
Conversion Formula
ka = cent × 0.1
About Centuries
A century = exactly 100 Gregorian years ≈ 3.156 × 10⁹ s. Standard unit of historical periodisation (the 20th century, the 18th-century Enlightenment). IPCC projects warming and sea-level rise on century timescales. Precession of the equinoxes advances ~1.39°/century, so zodiac constellations no longer match their named seasons. Ice-core and radiocarbon records are commonly displayed at century resolution. 1 century = 100 yr.
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
| Centuries (cent) | Millennia (ka) |
|---|---|
| 1 cent | 0.1 ka |
| 2 cent | 0.2 ka |
| 5 cent | 0.5 ka |
| 10 cent | 1 ka |
| 25 cent | 2.5 ka |
| 50 cent | 5 ka |
| 100 cent | 10 ka |