What Is the Official Basketball Size?

What Is the Official Basketball Size?

What Is the Official Basketball Size?

The official ball size for the National Basketball Association and most other professional adult men's associations is a circumference of 29.5 to 30 inches and weighs 18 and 20 ounces. Official balls for the Women's National Basketball Association have a circumference of 28.5 inches.

Spalding has made official balls for the NBA since 1983 using a leather exterior, except for the 2006 and 2008 seasons, when a composite material was used. Commissioner David Stern announced a return to leather after hearing numerous complaints from players. Wilson makes the official ball of all Division 1 NCAA tournaments and some international competitions. Molten, a Japanese manufacturer, provides balls for several international leagues.