Find the perfect fit — every time.

Kids' feet grow roughly a full size every 2–3 months as toddlers and every 3–6 months after that. Age is just a starting point — foot length is the only measurement that counts. Use the guide below to measure at home and match straight to the chart.

1
Stand on paper
Place a sheet of plain paper on a hard floor. Have your child stand on it, feet flat and weight evenly spread.
2
Mark heel & longest toe
Hold a pencil upright and mark the very back of the heel and the tip of the longest toe. Do this for both feet.
3
Measure in centimetres
Use a ruler to measure the distance between the two marks. Use the larger of the two foot measurements.
4
Match to the chart
Enter your cm measurement in the Size Finder above — or find your number in the conversion chart below. When in doubt, size up.

Measure at home in 60 seconds

Enter your child's foot length (bare feet, standing, largest foot). We'll add 12 mm of growing room and show you the right size.

Measure at home guide
Fitting a childs shoe

Getting the fit right

A well-fitted barefoot shoe should feel snug at the heel and wide at the toes — with room to grow, not room to swim.

Always measure standing up
A foot spreads under body weight. Sitting measurements can read up to half a size smaller — always stand your child during measuring.
Measure in the afternoon
Feet swell slightly over the course of a day. An afternoon measurement gives you the most accurate fit for everyday wear.
Wear the socks they'll use
Thicker socks can take up to 2–3 mm. Measure with the socks your child will normally wear inside the shoe.
Add a thumb's width of room
The right growing room is ~12 mm beyond the longest toe. Enough to grow into; not so much that it affects how they walk.
Re-measure regularly
Under age 4: every 2 months. After age 4: every 3–6 months. Set a phone reminder — a too-small shoe is the most common cause of discomfort.

Full size conversion chart

EU sizing is our source of truth. UK and US figures are provided for reference — always cross-check against foot length in cm.

EU UK US Foot length (cm) Approx. age
204512.0–12.5~12 months
214.55.512.5–13.0~12–18 months
225613.0–13.5~18 months
236713.5–14.0~2 years
247814.0–14.6~2 years
258914.6–15.3~2.5 years
268.59.515.3–16.0~3 years
2791016.0–16.5~3.5 years
28101116.5–17.0~4 years
291111.517.0–17.6~4.5 years
3011.51217.6–18.3~5 years
31121318.3–19.0~6 years
32131 (Youth)19.0–19.7~7 years
331 (Youth)1.519.7–20.3~8 years
342 (Youth)2.520.3–21.0~9 years

Note: Age is a rough guide only — always measure. Conversions vary slightly by source; treat foot-length (cm) as the source of truth.

Not quite right? Your first size-up exchange is on us.

Kids' feet don't wait — and neither should you. If the size isn't perfect, we'll swap it free of charge. No questions, no fuss. That's our promise.

Learn about the science