PROBLEM TO BE SOLVED: To provide a device for estimating mealtime of a user.SOLUTION: A mealtime estimation device includes: a calculation unit 3 for calculating a manducation feature amount indicating tendency of manducation of a user； a determination unit 4 for determining a meal feature amount indicating tendency of manducation related to a meal of the user by emphasizing differences between the maximum value related to the calculated manducation feature amount per day and its near value, and between the minimum value related to the manducation feature amount and its near value； and an estimation unit 5 for estimating mealtime of the user on the basis of the meal feature amount.SELECTED DRAWING: Figure 1【課題】ユーザの食事時間を推定する装置を提供する。【解決手段】ユーザの咀嚼の傾向を示す咀嚼特徴量を算出する算出部３、算出された一日毎の咀嚼特徴量に係る最大値およびその近傍の値と、咀嚼特徴量に係る最小値およびその近傍の値との差を強調することにより、ユーザの食事に係る咀嚼の傾向を示す食事特徴量を決定する決定部４、および、食事特徴量に基づいてユーザの食事時間を推定する推定部５を備える。【選択図】図１
