Football · Sizing Guide · 6 min read

Football sizes by age: the complete chart for ball, boot, shin guard and jersey.

One wrong size ruins the session — here's every measurement your child needs, from their first kick to their first competitive match.

RM
Royal Cricket Shop Team · Editorial, Royal Cricket Shop
Published 24 Sep 2026

The message came in on a Saturday afternoon from a parent in Delhi — Priya Aunty, as her son calls her, who I know through a mutual cricket friend. She'd bought her 6-year-old son Aryan his first "proper football" as a birthday surprise. Big box, shiny packaging, and a note that said "just like the professionals use." She sent me a video of Aryan attempting to kick the ball. The ball barely moved when it hit his foot. He looked confused, frustrated, and was starting to lose interest after two minutes. I looked at the video carefully. She'd bought a Size 5 match ball — the full adult standard, 430–450 grams, 68–70 cm circumference. Aryan weighed maybe 18 kilos. He was trying to kick a ball that was almost the same circumference as his torso.

I told her the ball was the wrong size for a 6-year-old by two full sizes. She'd seen the word "football" and assumed all footballs were the same. Nobody at the shop had mentioned sizes. She didn't know sizes existed. This article exists because Aryan is not alone — undersized kids with oversized balls, ankle bones exposed because shin guards were bought two sizes small to "save money," boots bought two sizes large to "last longer." Every one of these choices either limits development or creates a safety risk. Let's fix that with one comprehensive chart.

Ball sizing by age — the standard FIFA chart

Football ball sizes are standardised globally. The number on the ball (1 through 5) refers to circumference and weight, not diameter. Bigger is not better for younger players — a ball that is too heavy slows technique development and can strain small joints. Here is the standard age mapping:

Ball Size Age Group Circumference Weight Notes
Size 1 Any age 43–46 cm ~200 g Skills / juggling ball. Not for match play. Used for footwork drills at all ages.
Size 3 Ages 3–5 (U6 / U7) 58–60 cm 300–320 g First proper match ball for early starters. Light enough for small legs to kick cleanly.
Size 4 Ages 6–9 (U8 through U11) 63–66 cm 350–390 g Most junior leagues in India use Size 4 up to U-12. Also the standard futsal ball size (low-bounce version).
Size 5 Ages 10+ (U12 and above) 68–70 cm 410–450 g Full adult / FIFA match standard. Used in all senior competitions, the ISL, and the Premier League.

A note on futsal: Futsal uses its own ball — technically a Size 4 in circumference but with a reduced bounce (sometimes labelled "low-bounce" or "futsal ball"). Do not use a regular Size 4 on a futsal court and do not use a futsal ball for outdoor matches — the low-bounce design makes it behave completely differently on a regular pitch.

Aryan needed a Size 3, and honestly a Size 1 for practising at home would have been a brilliant addition. Two purchases under ₹1,000 total would have given him a ball that actually responded to his foot.

Boot sizing across age groups — measure, don't guess

The most important rule with junior football boots: measure the foot in centimetres, heel to toe, every time you buy. Children's feet grow in spurts — a child who was a EU 30 in April may be a EU 32 in September. Don't assume last year's size is still correct.

Here is the approximate European size to Indian shoe size mapping for common junior and youth age brackets. These are guides — actual foot length measurement should always be used over age alone.

Typical Age Foot Length (cm) EU Size Indian / UK Size (approx.)
4–5 years 14–15 cm EU 22–24 UK 5–6 (child)
6–7 years 15–17 cm EU 25–27 UK 7–9 (child)
8–9 years 17–19 cm EU 28–30 UK 10–12 (child)
10–11 years 19–21 cm EU 31–33 UK 13 (child) – 1 (junior)
12–13 years 21–23 cm EU 34–36 UK 2–4 (junior)
14–15 years 23–25 cm EU 37–39 UK 4–6 (adult entry)
16+ / Adult 25–29 cm EU 40–45 UK 7–11 (adult)

How to measure: Have the child stand on a sheet of paper in their socks. Trace around the foot. Measure heel to the tip of the longest toe. Use that number against the chart. For football boots specifically, allow a growth margin of roughly the width of one thumbnail (about 7–8 mm) between the longest toe and the end of the boot. That's it — one thumbnail. Any more and the boot will shift under the foot during dribbles and turns. Any less and you'll be dealing with black toenails inside three sessions.

For the complete guide on choosing boots (stud types, materials, price ranges), see our How to Choose Your First Football Boots guide.

Shin guard sizing — the one you must get right

Shin guards are the most safety-critical piece of junior football kit, and also the piece most frequently bought wrong. Too small and the guard leaves the lower shin and ankle bone exposed — which is exactly where most accidental boot contacts land in junior football. Too large and the guard moves around, which is both distracting and useless.

The correct way to measure for shin guards: have the child stand straight. Measure from the bony prominence of the ankle (the ankle knob) to a point two fingers below the bottom of the kneecap. That measurement in centimetres is your target guard length.

Guard Size Shin Length (cm) Typical Age Notes
XS 12–15 cm Ages 4–6 Mini football / first kickabouts. Lightweight slip-in guards.
S 15–18 cm Ages 6–9 Most U-8 and U-10 players. Slip-in or sleeve types both work at this age.
M 18–21 cm Ages 10–13 The busiest size bracket — most U-12 and U-14 players land here. Ankle attachment straps help at this age.
L 21–24 cm Teens / small adults Late junior and early senior players. Hard shell with foam backing preferred for competitive play.
XL 24–27 cm Adults Standard adult guard for taller players. Same measurement rule applies — always measure, don't guess by height.
The one place you cannot compromise: shin guards A ball bought at the wrong size slows development. A shin guard at the wrong size is a safety failure. Measure every time. Guards that slide up to expose the ankle during play are guards that were either undersized or bought without ankle straps. Both problems are fixable — one costs ₹300–800 to solve.

Jersey and shorts sizing by age

Indian sportswear sizing for junior football jerseys tends to follow age bands more than precise measurements. Here's the general mapping for most Indian brands (Nivia, Vector X, Cosco, and the Indian sub-brand lines of Nike and Adidas):

Age Group Indian Label Size Chest (cm) Notes
4–6 years XS / Size 4–6Y 54–58 cm Mini-sized kits. Available mainly from specialist junior brands.
7–9 years S / Size 7–9Y 58–64 cm Most accessible junior size. Widely stocked.
10–12 years M / Size 10–12Y 64–70 cm Check whether Indian brand "M" is an adult or junior M — it varies by manufacturer.
13–15 years L Junior / Adult XS–S 70–80 cm At this age, many players transition to adult sizing. Measure chest and torso length rather than relying on age labels.
16+ / Adult Adult S / M / L / XL 80–108 cm Standard adult Indian sportswear sizing applies.

One practical note: football jerseys are designed to be relatively close-fitting compared to casual T-shirts. If you're buying for a child who runs warm or dislikes tight clothing, size up by one, not two — a very loose jersey flaps at the arms and catches the wind during sprints.

Sock sizing — often overlooked, matters more than you think

Football socks are not just clothing — they're part of the shin guard system. Slip-in shin guards sit inside the sock, which holds them in place. If the socks are too short, the shin guard pokes out at the top and shifts. If the socks are too wide in the calf, they bunch under the boot, which creates hot spots and blisters.

Junior football sock sizing in India typically follows shoe size:

The sock should reach mid-thigh or just below the knee after the shin guard is inserted. If the sock barely covers the top of the shin guard when worn, the sock is too short. The guard will be exposed and will shift constantly during running.

The "grow into it" trap

I hear this at least twice a week: "We bought it a bit big so he can grow into it." I understand the logic — junior gear is expensive and children grow fast. But football kit does not work like school uniforms. An oversized ball means less precise contact with every touch the child takes, from age six onwards. An oversized boot shifts under the foot during every turn and cut — and during those first few years of structured play, those turns and cuts are building the muscle memory that will define their technique as a teenager. An oversized shin guard slides up and leaves the ankle bone exposed.

This is exactly the same trap we see in junior cricket — a bat that is too heavy or too long does not build strength, it builds bad habits. The child compensates with their arms, their grip, their stance — and those compensations are extraordinarily hard to undo later. In football, an oversized ball teaches a child that contact with the ball feels heavy and unpredictable. An oversized boot teaches them to over-kick because the boot always feels a little off the foot. A half-size too large is the maximum acceptable margin, and even then only for boots — never for shin guards.

Size up annually, not wildly Book a "kit check" into your calendar every October before the season starts. Measure feet, measure shin length, try last year's boots on with this year's socks. If there's less than a thumbnail of space at the toe, it's time for new boots. Junior players in active training will often go through a full boot size in 8–10 months.

Honest ₹ price ranges — starter kit for a junior

Here is what a complete junior kit costs at honest 2026 Indian retail prices, without the upsell:

Full starter kit for a junior aged 6–9: ball ₹1,000 + boots ₹2,000 + shin guards ₹600 + two pairs of socks ₹600 = roughly ₹4,200. That is a complete, size-correct kit that will actually develop the child's game. Not ₹400 of wrong-sized gear from a general sports store.

When to size up — the annual review

Do not wait until something stops fitting to think about kit sizing. Junior players grow in spurts, and a boot that fit perfectly in September may be a problem by February — but if you wait until it's painful to discover this, the child has been playing in a boot that is cramping their toes for two months. Here is a simple annual review schedule:

Shin guards, unlike boots, don't need to be replaced just because the child grew — replace them when they no longer cover the correct range or when the hard shell cracks or deforms.

How Royal Cricket Shop actually helps

Football is our newer offering — cricket has been our flagship since we started, and we've brought the exact same approach to football: measure correctly, buy what fits now, do not over-invest in kit that fights the player. No algorithm, no commission on the ₹3,500 boot when the ₹1,800 one does the same job for a 9-year-old.

Message us on WhatsApp with three things: the child's age, their foot length in centimetres (stand on paper, trace the foot, measure heel to toe), and their shin length in centimetres (ankle knob to two fingers below kneecap). We'll send back the exact ball size, boot size, shin guard size, and two or three specific product recommendations with real prices. If the child is between sizes, we'll tell you which way to go and why.

For parents in Jaipur who can visit the shop — bring the child. We'll measure in person and let them try boots on with proper match socks before anything is purchased. Same approach as we've taken with junior cricket kit for years. Same people, same honesty, newer sport.

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