A visceral fat determining device with a weight-measuring function which is capable of measuring weight of a subject and providing information associated with the visceral fat of the subject and easy to operate at home or the like is disclosed. The visceral fat determining device with a weight-measuring function 10 includes a weight-measuring device for measuring the weight of a subject when the subject stands on a measuring surface, an input device for inputting personal data representing physical characteristics of the subject, a data processing unit for processing various types of calculations, and a display portion for displaying the personal data and a result of the calculation, wherein quantitative information associated with BMI and the visceral fat of the subject can be obtained by inputting an abdominal girth of the subject which is a circumferential length of a torso of the subject and height of the subject.