Planck Length

Speed of light (c) and gravitational constant (g) are used in relativity theory and planck's constant is used in quantum theory. Planck observed that these constants can be used to define the length, time and mass units. Thus, using these constants, we can define Planck length as √h'G/c3.

Constant Name

Planck Length

Symbol : lP

Unit : m

Value : 1.616 199(97) × 10−35

Speed of light (c) and gravitational constant (g) are used in relativity theory and planck's constant is used in quantum theory. Planck observed that these constants can be used to define the length, time and mass units. Thus, using these constants, we can define Planck length as √h'G/c3.


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