An electric razor with round external cutting members and round internal cutting members with cutters at the end of uneven length arms. Each one of the external cutting members has concentric circular shaving sections obtained by concentric grooves, and the backs of the circular shaving sections are defined as tracks so that cutters of the internal cutting member are rotated in the tracks. The external cutting member is formed with slits which are substantially in a radial direction and uneven in the length.