Basketball Size Guide (2024)

FAQs

Is 28.5 NBA size? ›

The standard basketball size used in college (NCAA) basketball for men and women is the same size that is used in both the NBA and WNBA, which is 29.5in (size 7) for men and 28.5in (size 6) for women. The ball must be inflated so that the weight of the ball is a maximum of 22oz for men and a maximum of 20oz for women.

Size 6 Basketball:

For boys, a size 6 basketball should be used between the ages of 12 and 13. For girls, a size 6 basketball should be used once they hit 12-years-old and is the official size used at the high school, college, and professional level.

Size 7. Size 7 basketballs measure 29.5” in circumference and have a standard weight of 22 oz. Size 7 basketballs are the standard ball size for men's professional basketball associations, such as the NBA, as well as men's college, high school, and travel basketball leagues.

NBA and men's college ball use 29.5" diameter, in the US that's typically a size 7 if I'm not mistaken. A 6 is smaller, lighter.

The standard for a basketball in the National Basketball Association (NBA) is 29.5 inches (75 cm) in circumference and for the Women's National Basketball Association (WNBA), a maximum circumference of 28.5 inches (72 cm). High school and junior leagues normally use NCAA, NBA or WNBA sized balls.

Size 7 29.5” 22 oz Men and boys ages 15 and up. This is official size for high school, college, and the pros. Size 6 28.5” 20 oz Boys ages 12-14. Girls and women ages 12 and up.

For girls, a size 6 basketball should be used once they hit 12-years-old and is the official size used at the high school, college, and professional level. The circumference of the basketball should be 28.5" and the weight 20 oz.

Coaches will be provided with a few spare balls for practices in the event your child forgets their ball or does not own one. Grades 1-3: Girls and Boys - Size 27.5.

Players will continue to use a Size 6 Basketball (under-14 boys/under-14 girls and older) as well as the Size 7 Basketball (under-16 boys and older) in Basketball Victoria competitions.

What size basketball do 9 year old boys use? ›

Smaller basketballs for ages 7-8 (size 5, 27.5” circumference) and ages 9-11 (size 6, 28.5” circumference). Using a smaller ball that is more proportional to the size of children's hands allows for better ball control, leading to enhanced skill development.

The Wilson Official NBA Game Ball is built with genuine leather and constructed to meet the world-class standards of the NBA.

The author stated that the standard basketball was too heavy and too large for women, and that women's palms were too small to efficiently control the ball. A smaller and lighter basketball (size 6) for women was introduced in the United States' Women's Professional Basketball League (WBL) in 1978 (Nissen, 1997).

Girls - Size 28.5 (regulation size women's ball) Boys - Size 29.5 (regulation size men's ball)

Size 6 balls are slightly smaller than size 7 basketballs, making them ideal for players with smaller hand spans. Size 6 balls are the official ball size for women's professional basketball associations, women's college, and high school basketball leagues, and in youth leagues for players 12 and up.

The regulation WNBA ball is a minimum 28.5 inches (72.4 cm) in circumference, which is one inch (2.54 cm) smaller than the NBA ball. This is a standard size 6 ball. As of 2008, this size is used for all senior-level women's competitions worldwide.