By Coach XT (Tan Xu Teng) — Founder of TAG International Tennis Academy, PTR Full Professional, career-high ITF Men’s 35+ World #56, and Head Coach at Nanyang Girls’ High School and Hwa Chong Junior College since 2018. Reviewed by the TAG coaching team.

Every week a parent arrives at a lesson with a brand-new racquet their child can barely swing — usually a full-size adult frame bought because it looked like a “proper” tennis racquet, or a hand-me-down from an older sibling. It is the most common equipment mistake I see, and it quietly holds children back more than almost anything else. A racquet that is too long or too heavy forces a young player to muscle the ball, drop the racquet head and develop compensations that take years to undo. The good news: getting it right is simple once you know what to look for. After more than two decades fitting racquets to juniors in Singapore, here is the guide I wish every parent had before their child’s first lesson.

Start With Height, Not Just Age

Junior racquets are sized by length, in inches, and children grow at very different rates — so height is a more reliable guide than age alone. Use age as a starting point, then let your child’s height fine-tune it. The chart below reflects the standard international sizing used across the sport, the same framework behind the red-orange-green ball pathway your child will progress through.

If your child falls between two sizes, choose the shorter one. A slightly shorter racquet is easy to control and lets a child swing freely; a slightly long one encourages exactly the bad habits we are trying to avoid.

The 10-Second In-Store Fit Test

You do not need a measuring tape. Have your child stand upright and hold the racquet down by their side, head pointing at the floor, like a walking cane. Their fingers should comfortably reach the butt cap with the arm relaxed and almost straight. If they have to bend the elbow to hold it, or the racquet head sits well off the ground, it is too long — go down a size. If their arm hangs well past the handle, they may be ready to size up. This simple check beats any chart, because it measures the one thing that matters: can your child actually control this racquet?

Grip Size: Usually Not a Worry for Young Children

For most junior racquets, grip size is tied to the length — manufacturers ship each size with one small, child-appropriate grip, so you rarely need to choose it separately. Get the length right and the grip almost always follows. If a grip feels a touch small as your child grows, an overgrip adds roughly 1.5 mm and buys a little time. Grip sizing only becomes a real decision when your child moves to a 27-inch adult frame, where the correct grip (measured against the palm) genuinely affects comfort and injury prevention — a fitting worth doing in person with a coach or a good racquet shop.

Weight: The Mistake That Matters Most

If length is the mistake I see most, weight is the one that does the most damage. Junior racquets are made of lightweight aluminium for a reason: a child should be able to swing the frame fast and finish the stroke in balance. Put a heavy adult racquet in a nine-year-old’s hand and they will drag it through contact, lose racquet-head speed, and brace their wrist and elbow to cope — the beginnings of poor technique and, over time, overuse strain. When you are unsure between two suitable racquets, the lighter one is almost always the better choice for a developing player. Swing speed built on a light frame transfers; strength built by wrestling a heavy one does not.

When to Move Up a Size

Children outgrow racquets the way they outgrow shoes — usually every one to two years through the junior stages. The signs are easy to read: the fit test now shows the arm hanging past the handle, your child is generating noticeably more pace, or they have moved up a ball colour in lessons. Don’t rush it, though. A child who is comfortable and winning rallies on their current frame has no reason to jump early; moving up too soon reintroduces the control problems a correctly sized racquet solved. Your coach will usually flag the right moment before you spot it yourself.

When Your Child Is Ready for an Adult (27-inch) Racquet

Most players graduate to a full 27-inch racquet from around age 11 or 12, once they are tall and strong enough to swing it without compromising technique — which lines up with the move to the green and then yellow ball on a full court. This is the first racquet worth choosing with real care: head size, weight, balance and grip all start to shape how your child plays. For a junior heading toward tournaments or school selection through our competitive junior tennis programme, I always recommend fitting this racquet with a coach rather than guessing from a chart — the right frame at this stage supports the game they are building, and the wrong one fights it.

How We Fit Racquets at TAG

At TAG International Tennis Academy, racquet fit is part of coaching, not an afterthought. Our certified, tournament-proven coaches check every new junior’s frame at the first lesson and will happily advise before you buy, so you are not spending on a racquet your child will fight or outgrow in a season. You can meet the full team on our coaches page, and players on the high-performance track train under Coach XT — tennis coach Singapore. Through our partner academy Sanwa X, advanced juniors can also train with Japanese professionals including former ATP World #378 and All Japan Champion Coach Kento Takeuchi, whose feel for racquet and string set-up at the professional level is exactly the expertise a developing player grows into.

Brand-new to the sport and not sure where to begin? Start with our kids tennis lessons or, for the very youngest, our toddler and preschool tennis — we provide suitable racquets for trial sessions, so your child can start before you have bought a thing. And if your little one loves the movement but the tennis court still feels big, the smaller court of pickleball is a fun way to build hand-eye coordination that transfers straight back to tennis: open play at our sister brand’s PickleChoo courts is a great weekend complement.

Frequently Asked Questions

What size tennis racquet should a 7-year-old use?

Most 7-year-olds fit a 23-inch racquet, which suits children roughly 114–126 cm tall. Height is the better guide than age, so use the in-store fit test to confirm: holding the racquet down like a cane, your child’s fingers should reach the butt cap with the arm almost straight.

Can my child just use an adult racquet to save money?

It is a false economy. A full-size 27-inch adult racquet is too long and too heavy for a young child, forcing them to drag the frame and brace their wrist and elbow — the roots of poor technique and overuse strain. A correctly sized junior racquet is inexpensive and will help your child improve far faster.

How often will my child need a new racquet?

Through the junior stages, most children move up a racquet size every one to two years as they grow — similar to shoes. Signs it is time: the fit test shows the arm hanging past the handle, your child is hitting with more pace, or they have moved up a ball colour. Your coach will usually spot the right moment first.

Do I need to buy a racquet before my child’s first lesson?

No. At TAG International Tennis Academy we provide suitable racquets for trial sessions, so your child can start before you buy anything — and we will advise on the right size once we have seen them play. Reach us on WhatsApp at +65 8962 8400 or see our tennis coaching programmes.

About the author: Coach XT (Tan Xu Teng) is the Founder of TAG International Tennis Academy, a PTR Full Professional with a career-high ITF Men’s 35+ World #56 ranking, and Head Coach at Nanyang Girls’ High School and Hwa Chong Junior College. Explore the full TAG coaching team.