Structure of calcinated TiO₂ has been examined by X-ray diffraction (XRD) and Scanning Electron Microscope (SEM) analysis. The formation of the single phase TiO₂ was confirmed by X-ray diffraction (XRD) and the structural parameters were refined by the Rietveld analysis. A good agreement between observed and calculated X-ray diffraction pattern was obtained from the Rietveld refinement using space group I 41/ amd. The calculated unit cell parameters are used to plot the structure.