Planck Time


Planck time is another fundamental physical constant named after Max Planck. In the section on spacetime, the Planck units are described as the components of spacetime itself, referred to as granules, which can be modeled classically as a spring-mass system to derive fundamental physical constants where only five fundamental constants are required.  The following figure describes the relationship of four of these Planck constants.  

Planck constants describe the structure of spacetime

Unit Cell of Spacetime Lattice


The Planck time is a fundamental classical constant setting the baseline for the unit of time. It is the time that it takes for light to travel the distance of one Planck length.

Planck time motion of spacetime

Planck Time – Time it Takes for Light to Travel a Planck Length


See also: Planck length, Planck mass, Planck charge



Derivation – Planck Time

In classical constant format, the Planck time is one of the five fundamental physical constants that most other constants can be derived. It is set here to the speed of light (c), which is not one of the five fundamental constants, to establish its value. It is the time that a wave travels for the distance of a granule’s radius – Planck length.

In wave constant format, it is a complex ratio of the square of wavelength divided by amplitude and a property of the electron, and the speed of light.


Classical Constant Form

Planck time derived from Planck length and speed of light

Wave Constant Form

Planck Time Wave Constant Form

Using classical constants Using energy wave constants


Calculated Value: 5.3912E-44
Difference from CODATA: 0.000%
Calculated Units: s (time in seconds)
G-Factor: gλ2


Its value was calculated and shown to match the known value in the Summary of Calculations table. The derivation of this constant is available in the Fundamental Physical Constants paper.