A combination weigher comprising: a collecting conveyor apparatus which conveys in a direction objects fed to the collecting conveyor apparatus and discharges the objects; a plurality of weighing conveyors arranged along a conveying direction of the collecting conveyor apparatus, the weighing conveyors being fed with the objects in a deactivated state in which the weighing conveyors do not convey the objects and being configured to convey the objects held thereon in a first direction and discharge the objects from one end thereof, to feed the objects to the collecting conveyor apparatus in an activated state in which the collecting conveyor apparatus conveys the objects; a plurality of weight sensors provided to correspond to the weighing conveyors, respectively, to measure weights of the objects held on the weighing conveyors; a combination unit for finding a discharge combination including a combination of the weighing conveyors holding the objects in which a total weight thereof falls within a target weight range, based on the measured weight values of the weight sensors; and a weighing conveyor control unit which activates the weighing conveyors selected to make up the discharge combination to convey the objects on the weighing conveyors in the first direction and discharge the objects from one ends of the weighing conveyors, characterized in that it is configured to set a conveying speed of the collecting conveyor apparatus higher than a conveying speed of the weighing conveyors as to change the lengthwise direction of the objects having a bar shape or an elongated shape from a first direction, which is a conveying direction of the weighing conveyors, to a second direction, which is the conveying direction of the collecting conveyor apparatus. a collecting conveyor apparatus which conveys in a direction objects fed to the collecting conveyor apparatus and discharges the objects; a plurality of weighing conveyors arranged along a conveying direction of the collecting conveyor apparatus, the weighing conveyors being fed with the objects in a deactivated state in which the weighing conveyors do not convey the objects and being configured to convey the objects held thereon in a first direction and discharge the objects from one end thereof, to feed the objects to the collecting conveyor apparatus in an activated state in which the collecting conveyor apparatus conveys the objects; a plurality of weight sensors provided to correspond to the weighing conveyors, respectively, to measure weights of the objects held on the weighing conveyors; a combination unit for finding a discharge combination including a combination of the weighing conveyors holding the objects in which a total weight thereof falls within a target weight range, based on the measured weight values of the weight sensors; and a weighing conveyor control unit which activates the weighing conveyors selected to make up the discharge combination to convey the objects on the weighing conveyors in the first direction and discharge the objects from one ends of the weighing conveyors, characterized in that it is configured to set a conveying speed of the collecting conveyor apparatus higher than a conveying speed of the weighing conveyors as to change the lengthwise direction of the objects having a bar shape or an elongated shape from a first direction, which is a conveying direction of the weighing conveyors, to a second direction, which is the conveying direction of the collecting conveyor apparatus.