Evolution of the internal state of magnetite pellet during induration is defined by the kinetics of physico-chemical transformation it undergoes owing primarily to oxidation [< ~1273 K (1000 °C)] and sintering [> ~1273 K (1000 °C)] phenomena, along with the associated heat transfer. In the pursuit to simulate such evolution and properties of the magnetite pellet during induration, the respective oxidation and sintering kinetic models have been developed independently in previous studies. Oxidation model, which was built on the principles of grain model is capable of simulating the progress of oxidation at particle as well as at pellet scale, where kinetics of particle oxidation is suitably described by the Avrami mechanism. Similarly, sintering models at pellet scale were formulated by incorporating the deduced kinetic parameters for probable presence of both the phases—oxidized magnetite and non-oxidized magnetite. Subsequently, these independent models are integrated in a pertinent way to develop the single pellet induration model (SPIM), whose approach and formulation has been presented in this study. The methodology adopted will enable to simulate the internal state at any time during induration at pellet as well as particle scale for varying raw material mixes and the process parameters, such as temperature, O2 content and flow rate of the oxidizing gas. Thus, it can assist in optimizing the thermal and gaseous profiles in order to achieve the desired pellet properties, such as oxidation extent, type of reaction front, strength, etc.