Convert Megayears to Planck Time
Convert Megayears (Ma) to Planck Time (t_P) instantly and accurately.
Conversion Formula
t_P = Ma × 5.853367876e+56
About Megayears
A megayear (1 Ma) = 10⁶ yr ≈ 3.156 × 10¹³ s - the timescale of geology and tectonic evolution. The K-Pg mass extinction at 66.0 Ma; Cambrian explosion ~538.8 Ma; Great Oxygenation Event ~2,400 Ma. Plate motion at 2-10 cm/yr = 200-1,000 km per Ma (Atlantic ~3,000 km wider since Pangaea rifting ~200 Ma ago). Background extinction rate measured in extinctions per million species-years. 1 Ma = 10⁶ yr.
About Planck Time
The Planck time (t_P) = √(ℏG/c⁵) ≈ 5.391 × 10⁻⁴⁴ s — the time for light to travel one Planck length (~1.616 × 10⁻³⁵ m). Below this scale, general relativity and quantum mechanics both break down; a theory of quantum gravity is needed. No physical process or instrument approaches this timescale — it is a theoretical lower bound. Introduced by Max Planck in 1899. 1 t_P ≈ 5.391 × 10⁻⁴⁴ s.
Quick Reference Table
| Megayears (Ma) | Planck Time (t_P) |
|---|---|
| 1 Ma | 5.853 × 1056 t_P |
| 2 Ma | 1.171 × 1057 t_P |
| 5 Ma | 2.927 × 1057 t_P |
| 10 Ma | 5.853 × 1057 t_P |
| 25 Ma | 1.463 × 1058 t_P |
| 50 Ma | 2.927 × 1058 t_P |
| 100 Ma | 5.853 × 1058 t_P |