Convert Megayears to Attoseconds
Convert Megayears (Ma) to Attoseconds (as) instantly and accurately.
Conversion Formula
as = Ma × 3.155695200e+31
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 Attoseconds
An attosecond (as) = 10⁻¹⁸ s - the timescale of electron dynamics in atoms. The Bohr-model orbital period in hydrogen is ~152 as. Electron tunnelling through atomic potential barriers takes a few hundred as. The 2023 Nobel Prize in Physics (Agostini, Krausz, L'Huillier) honoured methods for generating sub-100 as pulses via high-harmonic generation in Ti:sapphire lasers. 1 as = 10⁻¹⁸ s = 1,000 zs.
Quick Reference Table
| Megayears (Ma) | Attoseconds (as) |
|---|---|
| 1 Ma | 3.156 × 1031 as |
| 2 Ma | 6.311 × 1031 as |
| 5 Ma | 1.578 × 1032 as |
| 10 Ma | 3.156 × 1032 as |
| 25 Ma | 7.889 × 1032 as |
| 50 Ma | 1.578 × 1033 as |
| 100 Ma | 3.156 × 1033 as |