<p>The activity meter (1A) is provided with: a body movement-detecting unit (110); a display unit (130); a target activity-acquiring unit (122a); a cumulative activity-calculating unit (122b); an excess activity-calculating unit (122c); an equivalent value-calculating unit (122d) that calculates an equivalent value, which represents the excess activity, by using the standard caloric value of a previously chosen food as a unit caloric value and dividing the consumed calories corresponding to the excess activity by the unit caloric value; and a display behavior control unit (123) that controls the display behavior of the display unit (130) so that the measurement results can be displayed on the display unit (130) using the equivalent value.</p>
