Soccer Ball Size by Age: Size 3 vs 4 vs 5, Settled
Soccer ball size goes by the age group your league plays in, not by your kid’s birthday. The standard answer: size 3 for U8 and younger, size 4 for U9 through U12, and size 5 from U13 up. AYSO’s rules set exactly those three bands, and Oregon Youth Soccer’s league guidelines put U8 on a size 3 and U9/U10 on a size 4. Sizes 1 and 2 are for toddlers and skill work, not league games. Indoor futsal balls use their own, smaller numbering. If your league’s welcome email names a size, that wins.
The soccer ball size chart, by league age group
These are AYSO’s ball rules from its size-of-ball-and-field page, which lists circumference and weight as well as the size number:
| Age group | Ball size | Circumference | Weight |
|---|---|---|---|
| 6U and 8U | Size 3 | 23.0–25.0 in | 10–12 oz |
| 10U and 12U | Size 4 | 25.0–26.5 in | 12–14 oz |
| 14U and older | Size 5 | 26.5–28.0 in | 14–16 oz |
Other organizations land in the same place. Oregon Youth Soccer’s developmental league guidelines list “Ball Size: Size 3 ball” for U8 and “Ball Size: Size 4 ball” for U9/10. Select, which makes the ball I recommend below, uses the same split in its sizing guide: size 4 for ages 9 to 12, size 5 for 13 and up.
As a quick answer by age:
- Ages 3 to 7 (U4 to U8): size 3
- Ages 8 to 12 (U9 to U12): size 4, with the switch at whichever point the league moves your child up
- Ages 13 and up (U13 and older): size 5, the full-size ball used from high school up
The age I get asked about most is 8, which can land on either side of the line. That’s why the next section matters more than the chart.
The age that counts is the league’s, and it may have changed this fall
Youth soccer groups kids by a “U” age, and a U-age is not always a birthday age. A kid who is 8 in October might play U9, or U10, depending on how the league builds its teams.
That rule is also in motion right now. U.S. Soccer’s player registration page says US Youth Soccer, AYSO and US Club Soccer “have agreed to adopt an age group formation cycle running from August 1 to July 31, beginning with each Organization Member’s 2026-2027 season/registration year.” It also says members choose among three options: birth year (January to December), August to July, or September to August. So a child’s age group this fall may not be the one they played in last spring, and two leagues in the same county can group the same kid differently.
The page includes an age-group tool that takes a birthdate and shows the options. The simpler route is the one I use for every sport: find the U-age on the team roster or the registration receipt, then buy the ball for that group. It’s the same move as with basketball sizes, where the league ball is the one that matters.
Sizes 1 and 2: what they are actually for
Neither is a league ball. Net World Sports’ soccer ball size guide is honest about it: “Although there are no official guidelines, soccer coaches generally recommend that children aged 3-5 years old use a size 2 soccer ball, and children aged 3 and under play with a size 1 soccer ball.”
- Size 1 (about 17–20 in around, per that guide): the “skills ball”. The same guide says size 1 balls “can be used by players of all ages for close control training.” It’s the one to keep in the house for foot skills.
- Size 2 (about 20–22 in): a toddler’s ball for the backyard. A three-year-old kicking a size 2 around the grass is getting the point of the game.
Preschool programs usually supply the balls, so ask before buying a size 2 for one term.
Indoor season: a futsal ball is a different ball
Winter indoor programs are opening now, and this is where families buy the wrong thing. Futsal balls are numbered on their own scale. Net World Sports’ futsal size guide says futsal balls “typically have three sizes: 2, 3 and 4,” and lists:
| Futsal ball | Age | Circumference |
|---|---|---|
| Size 2 | Under 7 | 20.5–21.6 in |
| Size 3 | 8–12 | 21.6–23.2 in |
| Size 4 | 13 and older | 24.4–25.2 in |
It also says futsal balls “have a low bounce due to being played indoors and on a hard surface,” and that its table is a recommendation that “can be different depending on the manufacturer or competition.”
So a size 4 futsal ball is not the same ball as the outdoor size 4 your 10-year-old used all fall, and the age bands don’t line up either. Before buying, ask the program two questions: is this futsal on a hard court, or indoor soccer in an arena with walls and turf? And which ball do you play with? Futsal is the version with its own ball.
The ten-second check for a ball that’s too big
Hand your kid the ball and watch three things, the way you’d scout a new player:
- Dribble at a jog. Can they push it with the inside and outside of the foot and keep it close? A ball that’s too big gets toe-poked and chased.
- Stop it dead. Roll it at them. Can they trap it under the sole of the foot without it rolling away?
- Pass it ten yards. Does it get there with the inside of the foot, or does every pass need a run-up?
If two of the three look like hard work, the ball is probably a size too big. This is about control and touches. The right-size ball simply lets a young player do more with it, and a kid who gets more touches has more fun at practice. My backyard soccer drills are built around exactly those touches.
Buying one: the worked example
For a backyard ball in the right size, the one I point new families to is the Select Classic. Select describes it as a “machine sewn ball for youth recreational players and camps,” and its own store lists it in sizes 3, 4 and 5, so one model covers every age group on the chart (checked 2026-09-27). Choose the size on the listing to match the U-age, not the age on the box.
Once your player is on a size 4 or 5, Select’s Numero 10 is the sturdier step up, with 32 hand-stitched panels. Its store listing offers it in sizes 4 and 5 only, so it isn’t the answer for a U8 player.
What to skip:
- The size 5 “because that’s the real one.” Buy the ball your child’s age group plays with.
- Buying up a size to grow into it. The ball doesn’t stretch and neither does their touch. If they move up next season, buy then.
- Toy-aisle character balls. Thin, bouncy and short-lived. A ball that goes flat by October is a ball nobody wants to practice with.
The ball is one line on the full youth soccer gear list, which covers shin guards, socks and bags. Cleats get their own fit guide.
FAQ: soccer ball size by age
What size soccer ball for a 5 year old?
Size 3. That’s the ball AYSO sets for 6U and 8U, and most programs for five-year-olds use it too. A size 2 is fine for backyard play if you already have one.
What size soccer ball for an 8 year old?
Size 3 or size 4, depending on the age group. If they play U8, it’s a size 3. If the league has them in U9 or U10, it’s a size 4. Check the age group on the roster first.
What size soccer ball does a 10 year old use?
Size 4. AYSO uses a size 4 for 10U and 12U, and Oregon Youth Soccer uses it from U9.
Is a 12 year old size 4 or size 5?
Usually size 4 through U12, then size 5 from U13. A 12-year-old whose birthday puts them in U13 under their league’s rules plays with a size 5.
What is the difference between size 4 and size 5 soccer balls?
Size. AYSO lists size 4 at 25.0 to 26.5 inches around and 12 to 14 ounces, and size 5 at 26.5 to 28.0 inches and 14 to 16 ounces. Size 5 is the full-size ball.
