The properties of MgFexCr2-xO4 (x = 0.6, 0.8) chromite synthesized via solution combustion method were investigated. The XRD pattern confirmed phase formation of the compounds. The FTIR spectroscopy was used to obtain the transmittance spectra which determined the bands around 460.31 and 575.41 cm−1, corresponding to the stretching and bending vibration of metal oxide bonds. The frequency dispersion dielectric parameters (ε′ and ε″) were examined using dielectric spectroscopy in various frequencies (100 Hz–100 kHz) and temperatures. The ε’ and ε” values decreased with frequency owing to the ceasing effect of polarization. It can be explained according to Maxwell-Wagner’s model on the basis of space charge polarization. The conductivity of MgFexCr2-xO4 chromites was increased due to charge carriers hopping between Cr2+ and Cr3+ ions, followed by Jonscher’s power law. A single semicircle arc of cole – cole plot suggested non–Debye relaxation present in the chromites. The higher value of ε’ was observed for x = 0.8 mol% of Fe3+ ions showing the utilization of MgFexCr2-xO4 chromites for various device applications such as electrode materials, capacitors, MOSFET and other energy storage devices, etc.