A sintered compact according to the present invention includes: a first material that is cubic boron nitride; a second material that is an oxide of zirconium; and a third material that is an oxide of aluminum, the second material including cubic ZrO2 and ZrO, the third material including α-Al2O3, and the sintered compact satisfying the following relation: 0.9≦Izro2(111)/Ial(110)≦30; and 0.3≦Izro(111)/Ial(110)≦3, where Ial(110), Izro2(111), and Izro(111) respectively represent X-ray diffraction intensities of a (110) plane of the α-Al2O3, a (111) plane of the cubic ZrO2, and a (111) plane of the ZrO.