There are 3 standard sizes for basketballs: size 5 has a circumference of 27.5 inches, Size 6 has a circumference of 28.5 inches, and size 7 has a circumference of 29.5 inches. Size 6 is generally used in women's competitions, and size 7 in men's.
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The National Basketball Association allows only one official ball: The ball must be the official NBA game ball manufactured by Spalding. The ball is orange in colour, 29.5 (749 mm) inches in circumference and weighs 22 ounces (624 g) (size 7). It must also be inflated to between 7.5 and 8.5 pounds per square inch.
The National Basketball Association allows only one official ball: The ball must be the official NBA game ball manufactured by Spalding. The ball is orange in colour, 29.5 (749 mm) inches in circumference and weighs 22 ounces (624 g) (size 7). It must also be inflated to between 7.5 and 8.5 pounds per square inch.
official size is 29.5"( size 7) for men, 30.0" or the FIBA 30.7" can be found.
Basketballs of 27.5" or, 28.5"( size 6) for women or children,
The size of a basketball varies slightly by the type of basketball. The average size of a basketball used in the NBA is 29.5 to 29.875 inches in circumference.