Convert Planck Time to Femtoseconds
Convert Planck Time (t_P) to Femtoseconds (fs) instantly and accurately.
Conversion Formula
fs = t_P × 5.391247000e-29
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 Femtoseconds
A femtosecond (fs) = 10⁻¹⁵ s - the timescale of molecular vibrations and chemical reactions. Bond stretching: 10-200 fs; bending: 50-500 fs. Ahmed Zewail won the 1999 Nobel Prize in Chemistry for femtochemistry, capturing transition states in real time. Ti:sapphire lasers produce 10-100 fs pulses; LASIK uses 10-100 fs for precise corneal cuts. At 800 nm, one optical cycle = 2.67 fs. Light travels 300 nm in 1 fs. 1 fs = 10⁻¹⁵ s.
Quick Reference Table
| Planck Time (t_P) | Femtoseconds (fs) |
|---|---|
| 1 t_P | 5.391 × 10-29 fs |
| 2 t_P | 1.078 × 10-28 fs |
| 5 t_P | 2.696 × 10-28 fs |
| 10 t_P | 5.391 × 10-28 fs |
| 25 t_P | 1.348 × 10-27 fs |
| 50 t_P | 2.696 × 10-27 fs |
| 100 t_P | 5.391 × 10-27 fs |