Football size by age is simple on paper: size 3 for kids up to about 8, size 4 for roughly 9 to 12, and size 5 from 12 onwards. Size 5 is the full adult ball.

Real kids don’t always fit those boxes. So this guide also covers how to check fit at home, when to stay a size down, and what the label on the ball tells you. You’ll find a size chart in centimetres and grams, tips that apply in Kenya, and short answers to the questions parents ask most.

Football size by age: the quick answer

Football size for kids in Kenya follows the same 3, 4 and 5 system used everywhere else. What changes from one guide to another is the age at which each size starts.

Here is the football size chart by age in cm and grams, using the numbers Decathlon Kenya prints for its kids’ balls plus the official figures for size 5.

Treat the age column as a guide, not a rule. A UK supplier’s table of England’s FA youth formats keeps size 3 until under-11s, then moves to size 4 for under-12s and under-13s. Decathlon Kenya moves kids up at 9. Same game, two answers. If your child sits on a border, ask the coach.

Why the wrong ball size causes problems

A ball that doesn’t fit changes how a child plays and how they feel about playing. Three things show up fast, and parents usually notice them before the coach does.

Ball control gets harder for small feet

A ball that is too big is hard to stop and harder to guide. The foot is small, the ball is large, and the contact point keeps shifting, so kids end up poking at it instead of controlling it. Passes go wide. Shots go anywhere.

Heavy balls tire young legs quickly

Weight adds up. Going by the ranges above, a size 5 is between 75 and 160 grams heavier than a size 3, which is a lot for a small leg to swing for an hour.

Why kids lose interest in the game

This one hurts most. If a child can’t pass or stop the ball cleanly, they decide they’re bad at football. They’re not. The ball is wrong.

Size 3 football: who it suits

Size 3 is the starter ball for young school-age kids, light enough to kick without much effort. In Decathlon Kenya’s range it is meant for under-9s.

Typical age range and ball specs

Most guides put size 3 at about 5 to 8 years. It measures 58 to 60 cm round and weighs 290 to 335 g, so it’s small enough for little feet and light enough not to hurt. Parents often type “what size football for 7 year old” into Google, and for most of them the answer is size 3, unless the child is clearly ahead of their age group. It suits beginner training, backyard games and playground kickabouts, where the point is touch and fun rather than match rules.

Signs your child is ready to move up

Look for these before you buy a size 4:

• They kick a size 3 far with little effort and it clears the small pitch

• Their passes reach a friend a few metres away with some accuracy

• Their coach or school group has already switched

Size 4 football for school-age players

Size 4 covers the widest set of in-between years, so it’s the size parents get most confused about. Decathlon Kenya lists it for ages 9 to 12, at 63.5 to 66 cm round and 350 to 390 g.

Age range and where sizes get confusing

The size 4 football age most guides give is 9 to 12, though some start it at 8 and others hold it back until 12 or 13, depending on the league. So an 8-year-old could be on size 3 or size 4 depending on which page you read. The size 3 vs size 4 football difference isn’t huge on paper, about 5 to 6 cm around and 55 to 60 g in weight, but small legs notice it. The better question is what ball the child’s team uses and how it feels at their feet.

Size 4 for school matches and clubs

Many school teams and junior clubs in this band play with size 4. So what size football for 10 year old kids who play in a team? Size 4 in most cases, and the same ball the team trains with. Buying the matching ball means the weight feels familiar at home too.

Size 4 versus futsal ball confusion

Futsal ball size trips people up. Many futsal balls are sold as size 4 but built to bounce less, and some feel heavier than a regular size 4. Indoor games? Read the label.

Size 5 football and the move to full size

Teen and adult games run on the size 5 football official match ball, the one Law 2 describes: 68 to 70 cm round, 410 to 450 g. Most kids switch around 12, some a little later.

Twelve is the awkward age. Parents search “size 4 or size 5 football age 12” because both answers are defensible. Decathlon Kenya puts over-12s on size 5, while the UK table above keeps under-13s on size 4. Going early rarely helps. A ball that’s too heavy changes how a child kicks, and they pick up odd habits just to cope with it. Let them try a few sessions with a team size 5 before you commit.

When the time comes, the Lamborghini LFB661-5 White and the Lamborghini LFB881-5 Orange are both listed as size 5 with a machine-stitched PVC cover for outdoor use. The orange page says it suits teens and adults, which fits the 12-and-above group, not younger children.

When to size up or stay one size down

Age is the starting point. Build, skill and the team’s rules move it up or down, and you can usually tell which way within a couple of sessions.

Tall kids who look ready for more

A tall 7 year old doesn’t automatically need a size 4. Height helps, but leg strength and touch decide. If they clear a size 3 easily and look bored, borrow a size 4 for a few sessions. If the ball keeps running away from them, go back.

Small for their age or still learning

Smaller child, or new to the game? Stay on the lighter ball. There’s no prize for moving up early.

What school or club rules usually decide

On a team, the team’s ball wins over any chart. Youth league ball size rules change from one competition to the next, and I couldn’t find one national Kenyan chart to quote, so ask the coach or the school sports teacher. For casual kick-abouts at home, you can choose freely.

A simple at-home test for fit

This isn’t an official test, just a quick check you can do in the garden.

1. Pump the ball properly.

2. Ask your child to stop a gentle pass with the inside of the foot.

3. Get ten kicks out of them.

4. Watch for the ball rolling away every time, the child leaning back to lift it, or a tired leg.

Any of those three means the ball is probably too big.

Toddlers and young kids under five

Football for toddlers is play, not sport. They chase, kick, and fall over the ball, and that’s the whole point.

So what size football for toddlers? A UK supplier lists size 2 “midi” balls for under-5s and calls them best for skill practice and introducing the game (Davies Sports). In practice, pick a light, soft ball made for their age, check the age label, keep sessions short and on soft ground, and stay close because toddlers are quick.

Babies and newborns aren’t football players, of course. A ball toy for them is a different buy, checked against the age on the pack.

Material, surface and pressure: what else matters

The size number does most of the work, but cover, ground and air pressure decide how a ball feels once it’s in play. Here’s the short version.

Cover material and how it feels

PU vs rubber football cover is mostly a trade between feel and toughness. PU usually feels softer, rubber usually survives rough ground better. PVC is common on outdoor balls, including the Lamborghini ones above. The product details should say what the cover is made of, so read them.

Hard ground, grass and indoor play

Indoor vs outdoor football is really about the surface the ball will live on.

A ball used daily on hard ground wears out sooner than a pitch ball. Rough ground, rough on a ball.

Inflation level and how to check it

Football inflation pressure is printed near the valve on most balls, so follow that number. For match balls, IFAB’s Law 2 sets 0.6 to 1.1 atmospheres at sea level. Press with your thumb: it should feel firm, with a tiny bit of give. A flat ball is hard to control and an over-pumped one is hard on young feet. Balls leak air over time, so check now and then.

A short checklist before you buy

Two minutes of checking saves a wasted trip. Most of what you need is on the ball or the box.

Label details worth reading twice

Look for these three:

• The size number (3, 4 or 5)

• What the cover is made of

• The recommended air pressure

The age range and whether it’s for indoor or outdoor use are worth a glance too. If the size isn’t on the product page, ask before ordering. The Lamborghini pages above state Size 5 in their descriptions, which is what you want to see.

Buying as a gift without knowing age

Ask a parent for the child’s age and whether they play in a team. No way to ask? Go by school class and the chart above, and keep the receipt in case the size is off.

Conclusion:

Size 3 for kids up to about 8, size 4 for about 9 to 12, size 5 from 12. Check which ball the team uses, run the home test, and read the label before you buy. If it feels too big, it probably is. Not sure? Go one size down and let your child decide.

Wrong ball, wasted weekend. Find the right football for your child here.

 

FAQs:

Can a younger child use a bigger ball?

Not a good idea. A bigger ball is heavier and harder to control, so kicks go wrong and legs tire faster. Stay with the size for their age and move up once stopping and passing feel easy for them in practice.

How do I know if a ball is too big?

Watch the child. If the ball keeps rolling away, they lean back to lift it, or their leg tires after a few kicks, it’s probably too big. Try one size down and ask the coach what the team uses for matches.

Is size 5 too heavy for a 10 year old?

Usually, yes. Size 5 is meant for about 12 and above, and most 10 year olds play with size 4. A tall, strong child may cope in casual play, but check with the coach before you buy one for team play.

Do indoor and outdoor balls follow the same sizes?

Yes, for ordinary balls. A size 4 indoor ball is about the same size as a size 4 outdoor one. The cover and bounce are what change, so read the label if the ball is for a hard indoor floor or a futsal court.

Can girls and boys use the same ball sizes?

Yes. Size is picked by age, not gender, so girls and boys of the same age use the same ball. Women’s football uses a size 5 as well, so the choice really comes down to age, build and what the coach says.