The standard height of a medicine cabinet is 72 inches from the floor to the top of the cabinet, excluding the door trim. Contractors sometimes hang smaller medicine cabinets lower so that the mirror better shows the user's face.
Medicine cabinets are available in recess mount styles, which install inside the wall, and surface mount models, which attach to the outside of the wall. Both models have the same standard height. To determine an alternate height for a short medicine cabinet, a helper holds the cabinet on the wall while the primary user stands in front of it looking into the mirror. The helper raises and lowers the cabinet until the viewer's body and face are within view. Then the helper marks the height of the cabinet for installation.