Poly (vinylidene fluoride) (PVDF) is widely used in many fields, such as thermal interface materials and membrane distillation membranes; therefore, modeling its thermal conductivity is of great importance. In this study, equilibrium molecular dynamics simulations were used to calculate the thermal conductivity of PVDF at different degrees of polymerization and temperatures. The results revealed that as the temperature and degree of polymerization increase, the overall thermal conductivity of PVDF increases. Moreover, at certain temperatures, λ_C and λ_B were found to be linearly related to the reciprocal of the molecular gyration radius and macroscopic density, respectively. Additionally, when the molecular gyration radius of PVDF is large, λ_NB shows an approximately linear relationship with the gyration radius. Finally, correlations for predicting λ_C, λ_B, λ_NB, and the overall thermal conductivity of the material were proposed based on extensive numerical results. The findings of this study have significant implications for the development and design of PVDF materials.