Basketball sizes vary by age, gender, and also level that play. The main size of the basketball provided by the NBA is 29.5 inch in circumference. That’s the exact same size offered throughout men’s college and also high school basketball leagues. The WNBA uses a slightly smaller sized ball, measuring 28.5 customs in circumference.

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For worldwide play, specifically FIBA, the basketball offered is what’s referred to as a Molten GL7 for men and Molten GL6 because that women. These basketballs typically feature two various colors and are slightly bigger, v a 30.7-inch circumference because that the men’s ball and also a 29-inch circumference for the women’s.


Boys in middle school (or eras 12-14), use a 28.5-inch ball, as carry out all women and also girls ages 12 and up. For anyone, masculine or female, in between the ages of nine and also 11, a ball size of 27.5 customs in one is recommended, and also is the most generally sized ball provided in youth basketball leagues.

Boys and girls in between the ages of 4 and 8 use a basketball in between the size of 22 inches and also 24.5 inches in circumference, depending on the individual’s hand size, which deserve to be figured out by a coach or parental by measuring indigenous the bottom of the individual’s palm to the pointer of his or her center finger.

An NBA basketball need to be inflated come a push of 7.5 to 8.5 PSI. The WNBA uses the same push regulations.

In the NCAA, inflation needs are offered in weight, through the men’s ball having a maximum load of 22 ounces and the women’s ball having a maximum load of 20 ounces. In FIBA play, the main rules state that the round “be inflated come an air pressure such that, once it is dropped ~ above the playing floor from a elevation of roughly 1,800 mm measured native the bottom the the ball, it will certainly rebound to a elevation of between 1,200 mm and 1,400 mm, measured to the height of the ball.”


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What is the Diameter that a Basketball?

A traditional NBA basketball has actually a diameter between 9.43 and 9.51 inches. In the WNBA, the basketball has a diameter of in between 9.07 and 9.23 inches. Basketballs offered in the NCAA are in between 9.39 and 9.55 inches for the men and 9.07 and 9.23 inches for the women.

Indoor vs. The end Basketballs (a.k.a. “Street” Basketballs)

Basketballs used for indoor and outdoor play different in your material. At home basketballs room made of full-grain leather; basketballs expected for outdoor use room made the rubber.

Though basketballs made for indoor use may originally feel smooth to the touch, after a couple of uses they becomes somewhat damaged in and also easier to grip, much like a baseball mitt. Leather basketballs need to not be provided outside, due to the fact that the concrete surface ar of an the end basketball court causes the leather to roughen and also wear, which eventually ruins the ball’s grip.

Some at home basketballs are made the composite or man-made leather. The upside is that they don’t must be damaged in favor a continuous leather ball. However generally speak the high quality is no as good.


Outdoor, or “street” balls, rental a rubber surface due to the fact that it have the right to absorb the rougher surface ar of a concrete court without sacrificing the ball’s grip. A rubber round is likewise a great choice because that beginners due to the fact that it is the simplest ball come control.

Best marketing Basketball Brands

The three best selling basketball brands are Spalding, Nike and also Wilson. As the main ball the the NBA, Spalding is probably the most well-known basketball manufacturer. Nike and Wilson are also popular thanks to the variety of textures, technologies and also color schemes they offer.

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A typical official-size men’s basketball retails top top average in between $30 and $60. Both the NBA and WNBA usage Spalding basketballs, when the NCAA and also most youth leagues use Wilson. As stated previously, FIBA and also international leagues use Molten as its basketball provider.