Provided is a configuration which enables high-accuracy physique information to be acquired by a portable information terminal. A portable information terminal (10) according to one aspect comprises: a photographing processing unit (13) which acquires first image data by prompting an object person (30) to face the front and open both arms obliquely downward at a predetermined angle by means of voice output and/or screen display and photographing the object person (30), and acquires second image data by prompting the object person (30) to open the arms horizontally and rotate the body with a vertical direction as an axis and photographing the object person (30) and a physique information calculation unit (14) which, on the basis of the first image data and the second image data, calculates the perimeter of a torso.
