An architectural floor plan includes elements that determine movement of people within the architectural space and that play an important role in relating people and architecture. Especially since modern times, various shapes that deviate and escape from a floor plan by means of right-angled constitution have arisen and have been used as elements of architecture. Therefore, it is necessary to consider “a floor plan”. We propose an index that classifies floor plans from a person’s view, analyzing them by the modified box-count method comparing results, and proposing consideration.