PROBLEM TO BE SOLVED: To readily measure a movable range of a joint.SOLUTION: A joint movable range measuring device for measuring a movable range of a joint includes: an imaging part for imaging an image including a joint; a display part for displaying an image that is imaged by the imaging part; an operation detection part for detecting an operation to the display part; and a calculating part for calculating the movable range of the joint included in the image that is imaged by the imaging part based on a coordinate on the display part that is indicated by an operation detected by the operation detection part.SELECTED DRAWING: Figure 1【課題】関節の可動域を簡便に測定する。【解決手段】関節可動域測定装置は、関節の可動域を測定する関節可動域測定装置であって、関節を含む像を撮像する撮像部と、撮像部が撮像した画像を表示する表示部と、表示部に対する操作を検出する操作検出部と、操作検出部が検出する操作が示す表示部上の座標に基づいて、撮像部が撮像した画像に含まれる関節の可動域を算出する演算部と、を備える。【選択図】図1