To provide a pedometer enabling to correctly grasp an amount of continuous exercise by separating and supporting the walking state of walking exercise and diet.

When a duration time Te of a walking status that a walking speed is higher than 60m per minute as a walking condition exceeds 10 minutes and a walking speed of a user does not exceed 90m per minute as a diet condition, it is recognized that the walking exercise as aerobic exercise is performed, and the number of steps Cw in the walking state of the walking exercise is counted by a walking exercise walk step number counter 67. When the duration time Te of the walking status that the walking speed is higher than 60m per minute as the walking condition exceeds 10 minutes, and the walking speed of the user exceeds the walking speed 90m per minute as the diet condition, it is recognized that diet is performed, and the number of steps Cd in the walking condition of the diet is counted by a diet step number counter 66.