To provide a weight measuring device capable of providing a sufficiently reduced thickness.

A load cell 37 is supported on the surface of a base 14. A load transmission member 19 is interposed between a platform 13 and the load cell 37. An elastic deformation body 33 is arranged around the load transmission member 19. The elastic deformation body 33 makes the load transmission member 19 linked to a frame body 27 in such a way as to be changeable in attitude with respect to the base 14. Since the load transmission member 19 is not restrained superfluously, the energy of a load is transmitted to the load cell 37 without any loss. Since the elastic deformation body 33 is around the load transmission member 19, and the elastic member is not interposed between the load transmission member 19 and the platform 13, an interval between the platform 13 and the base 14 can be narrowed. The weight measuring device is thinned sufficiently.