In the molecule of the title thioester, C14H12O2S, the dihedral angle between the phenyl and benzene rings is 71.8 (3)°. The methoxy group is essentially coplanar with the benezene ring to which it is bonded, with an r.m.s. deviation of 0.0065 (5) Å for the non-H atoms involved. In the crystal, weak C—H⋯π interactions are present