The official NBA and competitive professional basketball is 29.5” | 74.9 cm in circumference with a diameter between 9.43”-9.51” | 24-24.2 cm. Professional basketballs must be inflated to a pressure between 7.5-8.5 PSI and cannot exceed the maximum weight of 22 ounces.
You'll need a ball to play the game. Today, basketballs are made with synthetic materials such as rubber, polyester, and nylon in combination with leather. In the NBA, the pressure of the ball must be between 7.5 and 8.5 pounds per square inch. The size of the ball measures 29.5 inches around in circumference.
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A key basketball court dimension for installation purposes is the distance from the baseline to the face of the backboard. In a setting where sanction play will occur the dimension from the baseline to the face of the backboard will be 4'.
Basketball courts come in different sizes based on the level and type of basketball being played. A professional NBA court is 94’ x 50’ | 28.65 x 15.24 m. Courts are comprised of several foundational components: the baskets, the three-point arcs, free-throw (foul) lines, and the half court line.
THE BASKET The regulation distance from the ground to the top of the rim is 10 feet for all levels of play. Regulation backboards are 6 feet wide (72 inches) by 42 inches tall. All basketball rims (hoops) are 18 inches in diameter. The inner square on the backboard is 24 inches wide by 18. 4.
The size of the ball is different for men’s, women’s, and youth leagues. For the NBA, men’s college, and boys ages 15 and up, players play with a 9.43-9.51 inch diameter (the width measured left to right) basketball. The circumference (the distance measured around the outside) of the ball is 29.5 inches.