Sports · 2
What is the official diameter of a basketball in inches?
Answer
9.5
An official NBA basketball has a circumference of approximately 29.5 to 29.875 inches and a diameter of about 9.43 inches. These specifications are set by the NBA and differ slightly for women's basketball (28.5 inches circumference) and youth leagues. The basketball was designed to fit comfortably in a player's hand while providing consistent bounce and flight characteristics. Modern basketballs are made from rubber, leather, or synthetic materials, with internal air pressure between 7.5 and 8.5 pounds per square inch.
💡 Did you know?
The basketball was invented in 1891 by James Naismith as an indoor winter sport to keep athletes active between football and baseball seasons.
Other options people guess
- 8.5
- 9
- 10
Topics
- basketball
- nba
- rules
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