Question: are nba and ncaa basketballs the same?
Answer: The official size of the basketball used by the NBA is 29.5 inches in circumference. That's the same size used throughout men's college and high school basketball leagues. The WNBA uses a slightly smaller ball, measuring 28.5 inches in circumference. ... An NBA basketball must be inflated to a pressure of 7.5 to 8.5 PSI.