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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).

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12y ago
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12y ago

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

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12y ago
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9y ago

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

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9y ago

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

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12y ago

29.5"

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Q: How big is a regulation size basketball?
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