Linked from
The 11 pages that link to Planck units, each with the reason it gives.
Planck constantRelated: The constant helps define natural scales for length, time, and mass.
Max PlanckBroader topic: The units carry Planck’s name and connect his constant to scales of nature.
Black hole thermodynamicsRelated: The entropy-area law measures horizon area in Planck units.
Planck scaleNarrower topic: These units set the characteristic scales named throughout this concept.
Planck lengthNarrower topic: The Planck length is the length member of this natural-units system.