The materials showing large anomalous Hall effect (AHE) have attracted great attention from a fundamental point of view and applications such as magnetic sensors compared to the ordinary Hall effect (OHE)-based sensors. The advantages of the AHE-based magnetic sensors over OHE-based ones are that they can operate in large-frequency ranges, are relatively easy to fabricate, and have lower intrinsic noise. It is theoretically predicted that Fe₃Pt (L1₂) shows large AHE and FePt (L1₀) shows large magnetocrystalline anisotropy (K_u). Thus, by tuning the composition of Fe-Pt, large AHE and corresponding magnetic anisotropy can be achieved for a suitable AHE sensor. In this study, we find the composition Fe_0.70Pt_0.30 that shows large anomalous Hall resistivity and high sensitivity with a lower saturation magnetization which would be suitable for magnetic sensors.