1-(4-Methoxy-phen-yl)-3-methyl-1H-1,2,4-triazol-5(4H)-one.

In the title compound, C(10)H(11)N(3)O(2), the triazole ring has a dihedral angle of 11.55†(2)° relative to the benzene ring. The crystal packing is stabilized by inter-molecular N-H⋯O and C-H⋯O hydrogen bonds, and by weak π-π stacking inter-actions [centroid-to-centroid distance = 3.545†(3)†à ].