Convert Attoseconds to Planck Time
Convert Attoseconds (as) to Planck Time (t_P) instantly and accurately.
Conversion Formula
t_P = as × 1.854858440e+25
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.
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
| Attoseconds (as) | Planck Time (t_P) |
|---|---|
| 1 as | 1.855 × 1025 t_P |
| 2 as | 3.71 × 1025 t_P |
| 5 as | 9.274 × 1025 t_P |
| 10 as | 1.855 × 1026 t_P |
| 25 as | 4.637 × 1026 t_P |
| 50 as | 9.274 × 1026 t_P |
| 100 as | 1.855 × 1027 t_P |