A weighing scale has a display unit for displaying the weight of an object loaded on a platform measured by a weight measurer, a communication unit for transmitting weight data to, or receiving from, another weighing scale, a determiner that determines whether the weighing scale is capable of communicating via the communication unit with another weighing scale, and a controller that, in a case in which a result of the determination by the determiner shows that the weighing scale is not capable of communicating with another weighing scale, controls the display unit to display weight data output by the weight measurer, and in a case in which a result of the determination by the determiner shows that the weighing scale is capable of communicating with another weighing scale, that transmits weight data to, or receives from, another weighing scale.