888-353-HOOP (4667)

Basketball Size Chart

Selecting the right basketball size is key to improving your game and ensuring comfort during play.

Whether you’re a professional player or a youth athlete, using the correct basketball size tailored to your age and skill level can significantly enhance your performance and experience on the court.

Here are the different sizes of basketballs followed by their recommended age group and skill level.

Size 7 Basketball

  • Age Group: 14 and older
  • Gender: Men and Boys
  • Circumference: 29.5 inches
  • Weight: 22 ounces
  • Usage: This size is the standard for the NBA, men’s college, and high school basketball leagues. It is designed to enhance dribbling, shooting techniques, and overall handling for advanced male players.

Size 6 Basketball

  • Age Group:
    • Boys: 12 to 13
    • Women and Girls: 12 and older
  • Circumference: 28.5 inches
  • Weight: 20 ounces
  • Usage: Standard for women’s professional leagues, including the WNBA, and boys’ middle school leagues. This size helps bridge the gap between youth basketball and adult play, offering a size that’s manageable yet challenging enough to enhance skill development.

Size 5 Basketball

  • Age Group: 9 to 11
  • Gender: Boys and Girls
  • Circumference: 27.5 inches
  • Weight: 17 ounces
  • Usage: Perfect for youth players, this size allows younger children to handle the ball better, aiding in skill acquisition and overall game enjoyment. 

Size 4 Basketball

  • Age Group: 5 to 8
  • Gender: Boys and Girls
  • Circumference: 25.5 inches
  • Weight: 14 ounces
  • Usage: Designed for young children, size 4 basketballs are significantly lighter and smaller, making it easier for little hands to grip and shoot the ball. It’s an excellent choice for beginners to learn basic basketball skills.

Tips for Choosing the Right Basketball

  1. Consider the Playing Surface. Indoor basketballs are typically made of leather materials for a better feel and grip on smooth courts, while outdoor basketballs are made of more durable rubber to withstand rough surfaces.
  2. Test the Grip. Ensure the basketball has a good grip and texture, especially for younger players who might struggle with a slippery ball.
  3. Check the Inflation. Proper inflation, between 7.5 to 8.5 psi for sizes 6 and 7 and 7.0 to 8.5 psi for sizes 4 and 6, is crucial for maintaining the ball’s shape and bounce. Overinflated balls can be too hard and difficult to control, while underinflated balls may not bounce properly.
  4. Try Out First. Whenever possible, have players handle and test the basketball to ensure it feels right for their hand size and skill level.

For adults or those playing at a highly competitive level, a professional-sized ball (Size 7) is recommended.

Younger players should choose a ball that matches their age group to promote skill development and enjoyment of the game. 

NBA Youth Basketball Competition Sizes

NBA Youth Basketball Sizes Chart

The NBA Youth Basketball Guidelines provides a comprehensive framework for structuring youth basketball competitions.

According to the Youth Basketball Guidelines these are the following recommendations for age groups by basketball size.

Size 5

  • Boys & Girls Ages 7-8

Size 6 

  • Boys Ages 9-11
  • Girls Ages 12+

Size 7 

  • Boys Ages 12+ 

Free Shipping on all Hoops