As part of this SI redefinition, the Boltzmann constant is also getting an exact definition 1.380 649 e-23 J/K (thereby defining the Kelvin). If we identify th

As part of this SI redefinition, the Boltzmann constant is also getting an exact definition 1.380 649 e-23 J/K (thereby defining the Kelvin). If we identify the entropy formula S = kB ln W as really being about bits, we see that in natural units kB = 1/ln(2) and can eliminate all energies in favor of temperatures (or vice-versa). If you think that entropy is better measured in nats, kB = 1.