What is the diameter of a basketball?

By Forinfos - 20/12/2025 - 0 comments

A standard NBA basketball is 9.43 to 9.51 inches in diameter, or 29 5/8 to 29 7/8 inches in circumference. It is inflated to a pressure of 7.5 to 8.5 pounds.

Other leagues have slightly different requirements for their basketballs. The diameter of a regulation WNBA basketball is 9.07 to 9.23 inches. The diameter of a FIBA basketball is 9.78 inches. NCAA basketballs must be 9.39 to 9.55 inches for men or 9.07 to 9.23 inches for women. The typical diameter of a grade-school basketball is 8.67 to 8.83 inches.

Basketballs are produced in smaller sizes for various other applications, such as children's playthings or promotional giveaways.


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