A measurement device comprising: an acquisition unit adapted to acquire positional information or direction information on a predetermined portion in a limb of a test subject; a calculation unit adapted to calculate angles or distances serving as ability indexes of the limb of the test subject on the basis of the acquired positional information or direction information; a determination unit adapted to determine whether or not a posture of the test subject is proper, on the basis of the acquired positional information or direction information; and an output processing unit adapted to output the calculated angles or distances in a state corresponding to a determination result regarding whether or not the posture of the test subject is proper; characterized in that the acquisition unit is adapted to acquire positional information on a floor and positional information on a toe of the test subject on the basis of a depth image of a lower half of the test subject which is obtained from a three-dimensional sensor, and is adapted to acquire positional information on a fingertip of the hand of the test subject on the basis of a depth image of the test subject, in an image region having an x coordinate larger than the x-coordinate of the position of the toe in the depth image, wherein the toe indicates the positive direction of the x-axis of a coordinate system of the depth image, wherein the calculation unit is adapted to calculate a distance from the fingertip of the hand and the floor on the basis of the positional information on the floor and the positional information on the fingertip of the hand of the test subject, wherein the measurement device further comprises an image acquisition unit adapted to successively acquire images including the test subject from the three-dimensional sensor, wherein the output processing unit is adapted to superimpose a mark on the position of the toe of the test subject on the acquired images to be displayed on the basis of the acquired positional information on the toe while sequentially displaying the acquired images, fixedly superimposing the mark on the sequentially displayed images by detection of a predetermined event after the superimposition of the mark, and performing coloring based on the depth information regarding the test subject on an image region having an x-coordinate larger than the x coordinate of the position of the toe in the depth image included in the sequentially displayed images. an acquisition unit adapted to acquire positional information or direction information on a predetermined portion in a limb of a test subject; a calculation unit adapted to calculate angles or distances serving as ability indexes of the limb of the test subject on the basis of the acquired positional information or direction information; a determination unit adapted to determine whether or not a posture of the test subject is proper, on the basis of the acquired positional information or direction information; and an output processing unit adapted to output the calculated angles or distances in a state corresponding to a determination result regarding whether or not the posture of the test subject is proper; characterized in that the acquisition unit is adapted to acquire positional information on a floor and positional information on a toe of the test subject on the basis of a depth image of a lower half of the test subject which is obtained from a three-dimensional sensor, and is adapted to acquire positional information on a fingertip of the hand of the test subject on the basis of a depth image of the test subject, in an image region having an x coordinate larger than the x-coordinate of the position of the toe in the depth image, wherein the toe indicates the positive direction of the x-axis of a coordinate system of the depth image, wherein the calculation unit is adapted to calculate a distance from the fingertip of the hand and the floor on the basis of the positional information on the floor and the positional information on the fingertip of the hand of the test subject, wherein the measurement device further comprises an image acquisition unit adapted to successively acquire images including the test subject from the three-dimensional sensor, wherein the output processing unit is adapted to superimpose a mark on the position of the toe of the test subject on the acquired images to be displayed on the basis of the acquired positional information on the toe while sequentially displaying the acquired images, fixedly superimposing the mark on the sequentially displayed images by detection of a predetermined event after the superimposition of the mark, and performing coloring based on the depth information regarding the test subject on an image region having an x-coordinate larger than the x coordinate of the position of the toe in the depth image included in the sequentially displayed images.