Coffee grinder-doser (4) comprising a grinder-doser body (8), a containment compartment (12) which contains an electric motor (16) and at least a coffee grinder (20) operatively connected to said electric motor (16), configured to grind coffee beans into grounds, a conveyor (32) of said ground coffee, a support (40) for a container (44) suitable to receive the ground coffee from an output (36) of said conveyor (32), the support (40) being mechanically connected to a weighing device (48) by pulley means (52), the weighing device (48) being placed inside hollow body (201). Advantageously, the pulley means (52) comprise a block (56) which discharges the weight from the support (40) to the weighing device (48), said block (56) crossing a front opening (60) of the hollow body (201). The grinder-doser (4) comprises means of protecting (64) the ground coffee joined to the block (56) in order to divert and/or increase the path of the ground coffee to enter the hollow body (201) through the front opening (60).
