A load detector (100) includes a beam-type load cell (21, 22) which is supported on a support base (11, 12) in a cantilever manner and a platform (30) connected to the beam-type load cell. The platform includes a main body (30M) on which a subject is to be placed and a slope (SL30) having a first end, which is connected to the main body, the slope being configured to guide the subject to the main body. The slope is configured to swing between a first position in which a second end (SLT) of the slope is in contact with a placement surface on which the load detector is placed and a second position in which the second end is separated from the placement surface.
