A sintered ferrite magnet having a ferrite phase with a hexagonal structure as the main phase, wherein the composition of the metal elements composing the main phase is represented by the following general formula (1): RxCamA1−x−m(Fe12−yMy)z:   (1), x, m, y and z in formula (1) satisfying all of the conditions represented by the following formulas (2)-(6): 0.2≦x≦0.5:   (2) 0.13≦m≦0.41:   (3) 0.7x−m≦0.15:   (4) 0.18≦yz≦0.31:   (5) 9.6≦12z≦11.8:   (6), and wherein the density of the sintered ferrite magnet is at least 5.05 g/cm3, and the crystal grains of the sintered ferrite magnet satisfy all of the conditions represented by the following formulas (7) and (8), where L μm is the average for the maximum value and S μm is the average for the minimum value among the diameters passing through the center of gravity of each grains in the crystal cross-section parallel to the c-axis direction of hexagonal structures. L≦0.95:   (7) 1.8≦L/S≦2.5:   (8).