A full size FIBA regulation size basketball court measures exactly 28 by 15 meters. In the National basketball Association (NBA), the court is 28.7 by 15.2 metres. In Australia, backyard half-courts generally start in size from about 7metres in height to fit the "free-throw line" (or 9m to fit the "three-point line") and 4 or 5 metres in width and upwards.