Convert Planck Time to Zeptoseconds
Convert Planck Time (t_P) to Zeptoseconds (zs) instantly and accurately.
Conversion Formula
zs = t_P × 5.391247000e-23
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.
About Zeptoseconds
A zeptosecond (zs) = 10⁻²¹ s. In 2020, physicists at Goethe University Frankfurt measured the H₂ photoionisation time at ~247 zs - the first direct event measurement at this timescale. W-boson lifetime ~300 zs; strong-force quark confinement dynamics ~1-3 zs. These timescales are resolved via the energy-time uncertainty relation and lattice-QCD simulations. 1 zs = 10⁻²¹ s = 1,000 ys.
Quick Reference Table
| Planck Time (t_P) | Zeptoseconds (zs) |
|---|---|
| 1 t_P | 5.391 × 10-23 zs |
| 2 t_P | 1.078 × 10-22 zs |
| 5 t_P | 2.696 × 10-22 zs |
| 10 t_P | 5.391 × 10-22 zs |
| 25 t_P | 1.348 × 10-21 zs |
| 50 t_P | 2.696 × 10-21 zs |
| 100 t_P | 5.391 × 10-21 zs |