A pre-operative breast measurement device and method for use in breast reduction surgery. The breast measurement device comprises a base portion and a support post mounted thereon, the support post being height adjustable so as to accommodate differing body heights of users. First and second breast measurement scales, which are width adjustable, are positioned on the support post, the scales being substantially perpendicular in relation to the support post, whereby the first breast measurement scale measures a weight of a first breast and the second breast measurement scale measures a weight of a second breast. A support saddle on the support post receives and supports a chin of a user during the measuring of the first breast and the second breast. The breast measurements provided by the scale thus provide a surgeon with an exact result of how much breast tissue must be removed from each breast during surgery so as to achieve a substantially symmetrical balance between the breasts after the surgery is completed.