
Basketballs come in a range of sizes, with the smallest balls intended for children who are just starting to learn the game. As players get older, they transition to larger balls, with men's professional leagues typically using a size 7 basketball, the largest size available. Women's basketball leagues, on the other hand, typically use a size 6 basketball, which is slightly smaller and lighter than the size 7 ball. This size 6 ball was introduced to make women's basketball more interesting to spectators and to account for the fact that female players tend to shoot from longer distances and have more accurate control of the ball. However, the use of a smaller ball for women has been a topic of debate, with some arguing that it puts women at a disadvantage when playing in co-ed games and that it does not significantly improve their performance.
| Characteristics | Values |
|---|---|
| Circumference | 28.5 inches (72.39 cm) |
| Weight | 20 ounces (566.99 grams) |
| Size | 6 |
| Inflation Pressure | 7.5-8.5 PSI |
| Usage | WNBA, FIBA, NCAA |
| Benefits | Improved accuracy for free throws, better ball handling |
| Limitations | Worse shooting, potential disadvantage in co-ed games |
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What You'll Learn

The size 6 basketball used in women's leagues
Basketballs come in different sizes, and the size of the ball used depends on the age, gender, and level of play of the players. It is essential to use the correct size basketball, as this will ensure that players can develop key skills such as shooting, dribbling, and receiving the ball, which can then be transferred to regulated games.
The official basketball size used by the NBA is 29.5 inches in circumference, which is also the largest size available. This size is used in men's college and high school basketball leagues in the United States and is suitable for males aged 12 and up due to its larger hand span.
The WNBA, on the other hand, uses a slightly smaller basketball. The size 6 basketball used in women's leagues has a circumference of 28.5 inches, which is also used in younger leagues for boys who are not yet ready for the larger size. This size is also the official ball size for most women's college basketball leagues. The size 6 basketball weighs 20 ounces and must be inflated to a pressure of 7.5 - 8.5 PSI, the same as the NBA.
Some people have questioned why women's leagues still use the size 6 basketball, arguing that it puts women at a disadvantage when playing in co-ed games with a larger ball. Others suggest that the smaller and lighter basketball was introduced to make women's basketball more interesting to spectators, as female players tend to shoot from longer distances and have more accurate control of the ball. Additionally, using a smaller ball may be more suitable for players with smaller hands, which is a legitimate argument as women, on average, have smaller hands than men.
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The introduction of size 6 basketballs
The decision to introduce size 6 basketballs for women was made by the International Basketball Federation (FIBA) in 2004. FIBA mandated the use of size 6 basketballs for women's competitions under its auspices starting from the 2004/2005 season. This change was based on the suggestion of WBL player Karen Logan, who proposed that women's hands are generally smaller than men's and that their upper body strength differs. Logan also argued that using a smaller ball would make women's basketball more interesting to spectators as female players tend to shoot from longer distances and have more accurate control of the ball.
While the introduction of size 6 basketballs was intended to improve scoring accuracy and make women's basketball more exciting, research on its impact has yielded mixed results. One study found an increase in successful free throws when women used size 6 basketballs, but only at the adult level. Another study compared over a thousand games played with larger and smaller balls, concluding that the ball size did not significantly improve scoring.
The size 6 basketball has been adopted by various women's leagues, including the WNBA, which formed in 1996, and is used in college basketball as well. The size 6 basketball is also used in youth leagues for boys who are not yet ready for the larger size 7 basketball. It is important for players of all ages and genders to use the correct size basketball to ensure an enjoyable experience and proper skill development.
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The impact on women's performance
The size of a basketball can have a significant impact on a player's performance. A basketball that is too big for a player can make the game less enjoyable, as it becomes harder to catch, control, pass, and shoot accurately. Similarly, training with a ball that is too small can cause issues when transitioning to a larger, heavier ball used in official matches.
In women's basketball, a size 6 basketball, with a circumference of 28.5 inches and a weight of 20 ounces, is used in the WNBA and other leagues. This is smaller than the size 7 basketball, with a circumference of 29.5 inches and a weight of 22 ounces, used in the NBA and other men's leagues.
The use of a smaller basketball in women's leagues has been a topic of discussion and debate. Some have argued that the smaller ball was introduced to make women's basketball more interesting to spectators, as female players tend to shoot from longer distances and have more accurate control of the ball. The smaller ball was also suggested by WBL player Karen Logan, who reasoned that women's hands are, on average, smaller than men's, and their upper body strength differs.
However, decades of research suggest that the smaller ball does not significantly improve women's performance. While one study found an increase in successful free throws when women used the size 6 basketball, it did not find an overall improvement in scoring. Additionally, the smaller ball can negatively impact shooting ability, as the difference in size and weight can affect the release angle and accuracy of shots. The use of a smaller ball can also put women at a disadvantage when playing in co-ed games or using the larger ball in practice.
The size of the basketball can also impact the prevalence of dunking in women's basketball. Lowering the rim height, in addition to using a smaller ball, has been suggested as a way to make dunking more achievable and potentially increase the attractiveness of the game.
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The weight of girls' basketballs
The weight of a basketball varies with its size. The size of a basketball is determined by its circumference, which increases as the ball size increases. As the circumference increases, the weight of the basketball also increases. For example, a size 7 basketball weighs more than twice as much as a size 3 basketball.
The standard basketball size for women in college (NCAA) basketball is 28.5 inches in circumference, which is referred to as a size 6 basketball. This ball weighs 20 ounces. The WNBA uses the same size and weight regulations as the NBA, with a maximum weight of 20 ounces for the women's ball.
For international play governed by the FIBA, the basketball size used for women's matches is slightly bigger, with a circumference of 29 inches. This ball must be inflated to an air pressure such that when dropped from a height of approximately 1,800 mm, it will rebound to a height of between 1,200 mm and 1,400 mm.
At the youth level, younger players use smaller and lighter basketballs to develop their skills. The lightest common basketball is the 27.5-inch basketball, which weighs only 17 ounces. This size is used in youth leagues for kids who are just starting to learn the game and develop their shooting, passing, and dribbling skills.
It is important for players of all ages to use the correct size and weight of basketball to ensure they adhere to competition rules and can effectively develop their skills. Using a basketball that is too big or too small can impact the player's performance, development, and enjoyment of the game.
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The air pressure of girls' basketballs
The air pressure of a basketball is an important aspect of the game, affecting the performance and safety of players. It is crucial to ensure that the basketball bounces consistently and predictably, which is essential for dribbling, shooting, and passing. A ball with too much air pressure will bounce too high and be challenging to control, whereas one with insufficient air pressure will not bounce adequately.
The standard air pressure for basketballs is measured in pounds per square inch (PSI) and is regulated by organisations such as the NBA and FIBA. The NBA recommends a slightly higher air pressure range of 7.5 to 8.5 PSI for their official game balls. On the other hand, women's basketball in the NCAA and FIBA suggests a marginally lower range of 6.5 to 8.5 PSI. These are recommended ranges, and individual players may prefer different PSI levels based on their playing style and preferences.
The WNBA, the women's basketball league in the US, uses a size 6 basketball, which is slightly smaller than the size 7 used in the NBA. The size 6 basketball used in the WNBA has a circumference of 28.5 inches and a weight of 20 ounces. To ensure a consistent and enjoyable playing experience, it is important to maintain the correct air pressure in these basketballs as well.
Maintaining the appropriate air pressure in a basketball is simple and can be done using a few basic tools. A pressure gauge is required to check the air pressure, and it can be purchased at most sports stores or online. Additionally, a pump and needle system can be used to increase air pressure, while separating the needle from the pump can help release air and reduce pressure.
It is worth noting that the air pressure in a basketball can be affected by changes in temperature and humidity. To prevent this, basketballs should be stored in a cool, dry place away from direct sunlight and extreme temperatures. Storing the ball in a mesh bag or with ventilation can also help prevent moisture buildup, ensuring consistent air pressure and, consequently, optimal performance during games and practices.
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Frequently asked questions
Yes, girls' basketballs are smaller. The WNBA uses a slightly smaller basketball measuring 28.5 inches in circumference, which equates to a size 6 basketball that weighs 20 ounces. In comparison, the NBA uses a size 7 basketball with a 29.5-inch circumference.
The smaller size was initially suggested by WBL player Karen Logan, who reasoned that women's hands are, on average, smaller than men's and that their upper body strength also differs. The smaller size was also expected to make the game more interesting for spectators as female players tend to shoot from longer distances and have more accurate control of the ball.
Some female players have noted that using a smaller basketball can impact their shooting accuracy, especially when switching between the smaller size 6 and the larger size 7 basketball. It can also be a disadvantage when playing in co-ed games, as female players are less accustomed to using the larger size 7 basketball.









































