Most toddlers have flat feet, and in the vast majority of cases, this is completely normal. Arches don’t even begin developing until around age 3, and they aren’t fully formed until about age 8. So if your toddler’s feet look flat right now, you’re likely watching a foot that’s right on schedule. That said, there are real things you can do to support healthy arch development and avoid the factors that interfere with it.
Why Toddlers Have Flat Feet
Babies and toddlers are born with a thick pad of fat on the bottom of their feet that fills in the space where an arch will eventually appear. This fat pad, combined with the natural looseness of young ligaments, makes nearly every toddler look flat-footed. The arch of the foot develops gradually as muscles strengthen, bones mature, and that fat pad thins out.
Studies on children’s foot development show just how common flat feet are in early childhood. Among six-year-olds, roughly 48% still have flat feet. By age 11, that number drops to about 16%. Age itself is one of the strongest predictors of whether flat feet resolve, meaning most kids simply grow out of it without any intervention at all.
Flexible vs. Rigid Flat Feet
There’s an important distinction between two types of flat feet. Flexible flat feet, the overwhelmingly common type, means the arch appears when your child stands on their toes or lifts their foot off the ground, but disappears when they stand normally. This type is developmental and almost always resolves on its own.
Rigid flat feet are different. In this case, the arch never appears, even when standing on tiptoe. Rigid flat feet can result from bones in the middle or back of the foot being fused together. If your toddler’s feet look stiff, cause pain, or never show any hint of an arch when they rise onto their toes, that’s worth a visit to a pediatric orthopedist. But for the vast majority of toddlers, flat feet are the flexible kind and perfectly normal.
Choose the Right Shoes
Shoe choice matters more than most parents realize. The goal isn’t to support the arch with a rigid shoe; it’s to let the foot move and strengthen naturally. The American Orthopaedic Foot & Ankle Society recommends shoes that are flexible and shaped like the child’s foot. The sole should be smooth and thin enough to allow natural movement, not thick and sticky, which can actually cause stumbling. Toddlers don’t need heels on their shoes. Flat outer soles make it easier for them to walk and develop balance.
Think of shoes as protection from the ground, not as a corrective device. Whenever it’s safe, letting your toddler go barefoot is one of the best things you can do for arch development. Walking without shoes forces the small muscles in the foot to work harder to grip the ground and maintain balance, which is exactly the kind of strengthening that builds arches over time.
Keep Body Weight in a Healthy Range
One factor that genuinely does interfere with arch development is excess body weight. A two-year follow-up study of preschoolers published in the Journal of the American Podiatric Medical Association found that children who were overweight or obese between ages 4 and 6 showed a measurable tendency for their arches to collapse compared to peers at a healthy weight. The researchers concluded that programs aimed at preventing foot deformities in children should include body weight control as a key component.
This doesn’t mean putting a toddler on a diet. It means the usual things: offering fruits, vegetables, and whole foods over processed snacks, limiting sugary drinks, and making sure your child gets plenty of active play every day. Healthy weight supports healthy feet.
Encourage Barefoot Play on Varied Surfaces
One of the most effective ways to support arch development is also one of the simplest: let your toddler walk on different types of terrain. Sand, grass, mulch, and dirt all create uneven surfaces that force the foot’s small muscles (called intrinsic muscles) to activate and strengthen. These are the same muscles responsible for building and maintaining the arch.
You can create similar challenges indoors. Lay pillows and cushions on the floor for your child to walk across, or hide small stuffed animals under a yoga mat to create a bumpy surface. The instability is the point. Every time the foot has to adjust to an uneven surface, those tiny muscles are getting a workout.
Play-Based Exercises That Build Arches
You don’t need a formal exercise program. Simple games can target exactly the right muscles. Here are four activities recommended by pediatric physical therapists at NAPA Center:
- Single-leg balance: Have your child stand on one foot. If that’s too hard, they can place the other foot on a ball or stand with one foot directly in front of the other. If it’s too easy, have them balance on a pillow. Balancing activates the small muscles of the foot and builds ankle stability.
- Marble pickup: Place marbles or small objects on the floor and have your child pick them up using only their toes. Start sitting down, then progress to standing, which adds a balance challenge. This directly targets the muscles inside the foot.
- Walking on uneven terrain: As described above, sand, grass, pillows, and cushions all work. The key is variety.
- Balancing on narrow surfaces: Use a curb edge, a tree root, a rolled-up towel, or a half foam roll. Have your child stand with heels and toes hanging off the edge and try to keep their balance. Once that’s easy, have them step side to side along the surface.
These work best when they feel like play rather than therapy. Turn marble pickup into a race, make balance practice part of an obstacle course, or challenge your child to walk across the “lava” (pillows). Consistency matters more than intensity. A few minutes of this type of play several times a week is enough.
Watch the W-Sit
W-sitting, where a child sits on the floor with their knees bent and feet splayed out to each side forming a “W” shape, is worth paying attention to. According to Cleveland Clinic, the repeated force of this position on the thighbone and shinbone can cause them to rotate slightly inward. This can contribute to intoeing, where a child’s feet turn inward while walking, which changes how weight distributes across the foot and can affect how the arch develops.
You don’t need to panic every time you spot it, but gently encouraging your child to switch to cross-legged sitting, side-sitting, or long-leg sitting is a good habit. If your child defaults to W-sitting constantly and seems unable to sit comfortably any other way, mention it at your next pediatric visit.
When Orthotics Actually Help
Orthotics and arch supports are not necessary for the typical toddler with flat feet. If a child’s flat feet are painless and flexible, insoles won’t speed up arch development. The arch will form (or not) based on genetics, muscle development, and the factors above.
Orthotics become relevant when flat feet cause pain, difficulty walking, or noticeably uneven shoe wear. In severe cases involving actual foot deformities, they may be introduced early, even during toddlerhood. But for the average flat-footed toddler, spending money on arch supports is unnecessary. Your energy is better spent on barefoot time, active play, and good shoe choices.