In this study, we successfully synthesized small granular ferric oxide (Fe2O3) thin films on stainless steel (SS) using successive ionic layer adsorption and reaction (SILAR) technique. The optimized Fe2O3 thin films underwent comprehensive physical characterization, revealing a hexagonal structure via X-ray diffraction (XRD). Field Emission Scanning Electron Microscopy (FE-SEM) confirm a small granular morphology. Electrochemical performance was assessed through cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemical impedance spectroscopy (EIS). The Fe2O3 nanograins demonstrated a high specific capacitance (Cs) of 744.7 F/g. Specific energy (SE) and specific power (SP) values peaked at 75.2 Wh/kg and 1.3 kW/kg, respectively, at 1 mA/cm² in a 1M KOH electrolyte. The EIS analysis confirmed an internal resistance (Ri) of 1.4 Ω, indicating excellent power concert and rate ability. These findings underscore the efficacy of the SILAR method in producing high-performance Fe2O3 nanostructures for supercapacitor applications, offering a cost-effective and scalable approach for energy storage solutions.