How big is a regulation size basketball?

Answer 1

For men, the official ball is 29.5 inches (74.9 cm) in circumference (size 7, or a "295 ball") and weighs 22 ounces (624 g). If women are playing, the official Basketball size is 28.5 inches (72.4 cm) in circumference (size 6, or a "285 ball") with a weight of 20 ounces (567 g).

Answer 2

WNBA, MASCAC, ECAC, ACC, NCAA etc.. use a 28.5 inches (72.4 cm) in circumference and 20 ounces (567 g) in weight ball.

Answer 3

29.5 inches for boys28.5 inches for girls

Answer 4

A regulation size basketball is between 29.5 and 28.975 inches in circumference. This is the standard used by the NBA

Answer 5

The regulation bball for women is 28.5 and the regulation for men is 29.0.

Answer 6

29.5"