There are provided a weighing system, an electronic scale, and an electronic scale marker for performing inventory management and the like for processing materials based on weight of processed products measured by an electronic scale. The weighing system includes an electronic scale that measures weight of a processed product and a terminal device. The electronic scale includes a display unit that displays the weight of the processed product and a marker that is provided in the vicinity of the display unit. The terminal device includes a data logger unit that performs character recognition processing within a region indicated by the marker based on an image, which is obtained by imaging the display unit, so as to acquire the weight of the processed product.