Just like soccer balls, basketballs have a range of sizes based on age or purpose. Choosing the right size is crucial for proper skill development, especially for young players who are learning the ropes of the game. From size 3 all the way up to size 7, let’s get right into finding out which basketball size is right for you.
Size 3 Basketball
Ages 4 and under.
Circumference: 22”
Unless you’re trying to start a child prodigy, size 3 is a mini novelty basketball that is mostly just for fun or to collect.
Size 4 Basketball
Youth ages 5 to 8.
Circumference: 25.5”
Size 4 basketballs are the next size up for little ones to play with. Since kids this age are not playing rule-based games, this size is just to get familiar with the ball and develop some basic skills.
Size 5 Basketball
Youth ages 9 to 11.
Circumference: 27.5”
A size 5 basketball is the standard youth size for team play. This is the ball kids will be using when they start learning the rules of the game and playing opposing teams.
Size 6 Basketball
Boys ages 12 to 14. Women age 12 and older.
Circumference: 28.5”
Size 6 basketball is the first ball where boys and girls split into groups. Girls over age 12 use this ball, and it’s the official basketball size for women’s high school, college and professional teams. Boys in middle school also play with a size 6 basketball until they reach high school.
Size 7 Basketball
Men age 15 or older.
Circumference: 29.5”
A size 7 basketball is the official ball size for men's high school, college and professional teams.