Here, we include all data for reproducing the experimental validation curves of Fig. 4a–d of the PLOS One article entitled “Quasistatic Cavity Resonance for Ubiquitous Wireless Power Transfer”. This data set includes measured, simulated, and analytically computed electric and magnetic fields, as well as all S-parameter data for reproducing the efficiency curves of panels d and e in Fig. 4 of the article. We further include a Comsol Multiphysics (.mph file) model that can be used for reproducing simulations for the QSCR designed and tested in the article.