According to iSport, the size of a boxing ring varies by competition type and regulatory body. Standard ring dimensions range from 16 feet by 16 feet to 24 feet by 24 feet.
Even within a specific type or level of boxing, the dimensions of the ring may vary. At the professional level, there are no prescribed ring dimensions, but regulatory bodies, such USA Boxing, have rigorous rules. The dimensions of the Olympic boxing ring are determined by the Amateur International Boxing Association. In this context, the size requirement for international competition is 20 feet by 20 feet square.