
Basketballs come in a variety of sizes, catering to different ages, genders, and levels of play. The size of a basketball is important for players to develop their skills and have fun playing. So, what size basketball do high schools use?
| Characteristics | Values |
|---|---|
| Circumference | 29.5 inches |
| Weight | 22 ounces |
| Inflation Pressure | 7.5 to 8.5 PSI |
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What You'll Learn

Basketball sizes vary by age, gender, and level of play
Basketball is a popular sport played by people of all ages, genders, and skill levels. To ensure that players can develop their skills and have fun playing, it is important to select a basketball that is appropriately sized for the players. Basketball sizes vary by age, gender, and level of play, and choosing the right size is crucial for proper skill development, especially for young players who are new to the game.
For children aged 4 and under, a size 3 basketball is recommended. This is considered a mini novelty basketball that is mostly for fun and to help introduce young children to the sport. As children grow older and begin to develop their basic skills, they can move up to larger basketball sizes. From ages 5 to 8, a size 4 basketball is appropriate, as it allows children to get familiar with the ball and develop their skills. For youth aged 9 to 11, a size 5 basketball is the standard size for team play. This is when children typically start learning the rules of the game and playing against other teams.
At the high school level, the basketball size depends on the gender of the players. For boys, a size 7 basketball is used, with a circumference of 29.5 inches and a weight of 22 ounces. This is the same size used in men's college and professional basketball leagues, as well as in the NBA. For girls, a size 6 basketball is used in high school, with a circumference of 28.5 inches and a weight of 20 ounces. This is the same size used in women's college and professional basketball leagues, including the WNBA.
It is worth noting that some basketball associations, tournaments, and countries may have different size requirements. Additionally, indoor and outdoor basketballs can also vary in materials and construction, with outdoor balls often made of rubber to withstand the rougher surface of a concrete court. When choosing a basketball for a child or teenager, it is important to consider their age, gender, and level of play to ensure they have the best opportunity to develop their skills and enjoy the game.
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The official size for high school boys' basketball is 29.5 inches in circumference
Basketballs come in a range of sizes, generally from size 3 to size 7. The size of the ball depends on the age, gender, and level of play of the players. For example, boys and girls between the ages of 4 and 8 use a basketball with a circumference of 22 to 24.5 inches, while boys between the ages of 12 and 13 use a size 6 basketball with a circumference of 28.5 inches.
The size of the basketball also varies between different basketball leagues. For instance, the WNBA uses a ball with a 28.5-inch circumference, while international play, specifically FIBA, uses a Molten GL7 for men and a Molten GL6 for women, with circumferences of 30.7 inches and 29 inches, respectively.
It's important to select the correct-sized basketball to ensure players can progress as their bodies develop and their strength increases. This is especially true for children, who will have more success and fun with a basketball that is the appropriate size for their age and ability.
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The WNBA uses a 28.5-inch ball
Basketballs come in a variety of sizes, and choosing the right one depends on the age, gender, and level of play of the player. The official size of the basketball used in the NBA is 29.5 inches in circumference, and this is the same size used in men's college and high school basketball leagues.
However, the Women's National Basketball Association (WNBA) uses a slightly smaller ball, measuring 28.5 inches in circumference. This is the same size used by boys in middle school (aged 12-14) and all women and girls aged 12 and above. The WNBA ball is considered a size 6 basketball, weighing 20 ounces, and must be inflated to a pressure of 7.5-8.5 PSI, the same pressure as NBA balls.
Both the NBA and WNBA use Spalding basketballs, which is the most recognized basketball manufacturer and the official ball of the NBA. Spalding balls are made of full-grain leather for indoor use or rubber for outdoor use. Spalding balls are also used in FIBA and international leagues.
The WNBA ball is smaller than the men's NBA and high school ball, which is considered a size 7 and measures 29.5 inches in circumference, weighing 22 ounces.
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Boys aged 12-14 use a 28.5-inch ball
Basketball is a fun and engaging sport for people of all ages, and it's important to select the right-sized basketball for optimal skill development and enjoyment. For boys aged 12 to 14, the recommended ball size is 28.5 inches in circumference. This is an important size to note as it is the standard size used in high school basketball leagues for boys in this age group.
Using a basketball that is the correct size for the player's age and gender is crucial. It ensures that players can naturally progress in their skills as their bodies develop and their strength increases. A ball that is too large or too small can hinder a player's development and make it more challenging to control the ball effectively. Therefore, it is essential for young players to use the appropriate ball size to learn the fundamentals of the game and develop their skills.
The 28.5-inch basketball is also used by all women and girls aged 12 and above. This standard size is consistent across various basketball organizations and leagues, including the WNBA, which utilizes a slightly smaller ball than the NBA. The NBA and men's college basketball leagues use a larger ball with a circumference of 29.5 inches.
For boys aged 12 to 13, a size 6 basketball is recommended, with a circumference of 28.5 inches and a weight of 20 ounces. This size is also suitable for girls once they reach the age of 12, and it is the official size used in high school, college, and professional leagues for this age group. When players turn 14, boys transition to a size 7 basketball, which is the official size used in high school, college, and professional leagues for men.
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Girls aged 12 and up use a 28.5-inch ball
Basketball is a fun and engaging sport for people of all ages, and choosing the right size basketball is crucial for proper skill development, especially for young players. Basketballs come in a range of sizes, and it's important to select the right one for your age group. Girls aged 12 and up use a 28.5-inch ball, which is also the official size used in the WNBA, with a weight of 20 ounces. This is slightly smaller than the basketball used in the NBA, which has a circumference of 29.5 inches.
The 28.5-inch ball is suitable for girls aged 12 and above as it allows them to develop their skills and strength appropriately for their age. It is important to consider the player's age and size when selecting a basketball, as this can impact their enjoyment of the game and their ability to progress. A ball that is too large or too small can affect a player's technique and make it more challenging to control the ball effectively.
For younger girls, aged 9 to 11, a smaller ball size is recommended, typically a 27.5-inch circumference ball, which is the most common size used in youth basketball leagues. This size is appropriate for learning the basics of the game and developing fundamental skills. As players grow and their bodies develop, they can progress to the larger ball size used by older girls and women.
The 28.5-inch ball used by girls aged 12 and up is also the standard size for women's basketball at the high school, college, and professional levels. This consistency in ball size across these levels of play ensures a smooth transition for players as they advance in their basketball careers. It allows them to focus on refining their skills and techniques without having to adjust to a new ball size at each stage.
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Frequently asked questions
The basketball used in high schools is 29.5 inches in circumference, which is the same size used in the NBA and men's college basketball leagues.
Middle school boys (aged 12-14) use a 28.5-inch ball, as do all women and girls aged 12 and up.
A ball with a circumference of 27.5 inches is recommended for boys and girls aged 9-11.
The official size of an NBA basketball is 29.5 inches in circumference.










































