Feed-mixing device configured to receive, mix and dispense animal feed, comprising - a frame with - a mixing bin attached to the frame for receiving and mixing said animal feed therein and dispensing it therefrom, - at least one mixing device which is rotatably drivable in the mixing bin, in particular a vertical mixing auger, for said mixing of said received animal feed, and a drive for the at least one mixing device, and - a weighing device for determining the weight of the animal feed received in the mixing bin, comprising N weighing elements (9-1, 9-2), N ≥ 2, each of which emits a weighing signal, and - a control system for controlling the feed-mixing device and for processing the weighing signals from the plurality of weighing elements (9-1, 9-2) to produce the determined weight, characterised in that the control system is configured to perform an, in particular fully automatic, calibration action of said weighing elements (9-1, 9-2), wherein the calibration action comprises: - driving the at least one mixing device, - reading out the respective weighing signal of each of the N weighing elements (9-1, 9-2) in each of M different positions of the mixing device, with M ≥ N, - calibrating the weighing elements (9-1, 9-2) on the basis of the read-out weighing signals, wherein said calibrating at least comprises determining a respective correction factor for the weighing signal of each weighing element (9-1, 9-2) by analysing the read-out weighing signals of all weighing elements (9-1, 9-2), and multiplying the weighing signal of each weighing element (9-1, 9-2) by the respective correction factor. - a frame with - a mixing bin attached to the frame for receiving and mixing said animal feed therein and dispensing it therefrom, - at least one mixing device which is rotatably drivable in the mixing bin, in particular a vertical mixing auger, for said mixing of said received animal feed, and a drive for the at least one mixing device, and - a weighing device for determining the weight of the animal feed received in the mixing bin, comprising N weighing elements (9-1, 9-2), N ≥ 2, each of which emits a weighing signal, and - a control system for controlling the feed-mixing device and for processing the weighing signals from the plurality of weighing elements (9-1, 9-2) to produce the determined weight, - a mixing bin attached to the frame for receiving and mixing said animal feed therein and dispensing it therefrom, - at least one mixing device which is rotatably drivable in the mixing bin, in particular a vertical mixing auger, for said mixing of said received animal feed, and a drive for the at least one mixing device, and - a weighing device for determining the weight of the animal feed received in the mixing bin, comprising N weighing elements (9-1, 9-2), N ≥ 2, each of which emits a weighing signal, and - a control system for controlling the feed-mixing device and for processing the weighing signals from the plurality of weighing elements (9-1, 9-2) to produce the determined weight, characterised in that the control system is configured to perform an, in particular fully automatic, calibration action of said weighing elements (9-1, 9-2), wherein the calibration action comprises: - driving the at least one mixing device, - reading out the respective weighing signal of each of the N weighing elements (9-1, 9-2) in each of M different positions of the mixing device, with M ≥ N, - calibrating the weighing elements (9-1, 9-2) on the basis of the read-out weighing signals, wherein said calibrating at least comprises determining a respective correction factor for the weighing signal of each weighing element (9-1, 9-2) by analysing the read-out weighing signals of all weighing elements (9-1, 9-2), and multiplying the weighing signal of each weighing element (9-1, 9-2) by the respective correction factor. - driving the at least one mixing device, - reading out the respective weighing signal of each of the N weighing elements (9-1, 9-2) in each of M different positions of the mixing device, with M ≥ N, - calibrating the weighing elements (9-1, 9-2) on the basis of the read-out weighing signals, wherein said calibrating at least comprises determining a respective correction factor for the weighing signal of each weighing element (9-1, 9-2) by analysing the read-out weighing signals of all weighing elements (9-1, 9-2), and multiplying the weighing signal of each weighing element (9-1, 9-2) by the respective correction factor.