To increase the convenience of a user in an exercise amount estimating system such as a walking meter using a positioning means such as a GPS.

Based on a GPS signal received by a GPS receiver 14, a current position of the user is acquired. The current position of the user is verified against an action pattern map, and it is determined whether the current position is within an exercise area or a non-exercise area. When it is within an exercise area, the exercise amount (a moving distance, calorie consumption, or the like) is calculated based on a moving speed or the like. A calculation is displayed and outputted by a display unit 18.