The invention concerns a conveyor system (2) for formatting slice-shaped food products in product stacks. The conveyor system (2) comprises an inlet (4), a lower product conveyor (8), an upper product conveyor (7, 9), a vertically swivelling distributor conveyor (6) for distributing the incoming food products selectively to the lower product conveyor (8) or to the upper product conveyor (7, 9), an output conveyor (10) receiving the food products partially stacked from the lower prod-uct conveyor (8) and the upper product conveyor (7, 9), and an outlet (11) for outputting the stacked food products in product rows. The invention provides that the individual conveying tracks (6G, 6H) of the distributor conveyor (6) can be swivelled vertically independently of one another in order to forward the incoming food products individually for each conveying track selectively to the lower product conveyor (8) or to the upper product conveyor (7, 9). The invention also includes a corresponding operating method.