Why do shoe sizes vary between brands, and how can I get the best fit for my child?

Every brand builds shoes on different lasts (the foot-shaped molds they use), and they each have their own take on width, toe box shape, and internal measurements. A US 10C from Nike won't fit exactly like a US 10C from Adidas. The most reliable thing you can do is measure your child's foot in centimeters and compare that number directly to the brand's own size guide. Customer reviews that mention "runs small" or "runs large" are also worth scanning before you buy.

What's the difference between children's and baby's shoe sizes in the chart?

It comes down to age range and foot length. Baby and toddler sizes cover US 1C through 9.5C, roughly birth to age 3, with foot lengths from about 8.9 cm to 15.9 cm. Little kid sizes pick up at US 10C and go to 13.5C (ages 4 to 7). Big kid / youth sizes run from US 1Y to 7Y (ages 7 to 12). The US numbering resets at the big kid stage, so a US 1Y is not the same as a US 1C. The chart is split into three separate tables so you can jump straight to the right range.

Can the shoe size conversion chart be used for both boys and girls?

Yes. Children's shoe sizes are based on foot length, not gender. A US 8C is the same physical size whether it's on a boys' sneaker or a girls' sandal. The only differences between boys' and girls' shoes are style and color. The sizing numbers don't change.

How accurate is the conversion from foot length to international shoe sizes for babies?

The conversions follow the standard sizing scales used by US, UK, and EU systems, so they're accurate as a general reference. Where things get messy is brand-to-brand variation. One company's EU 24 might be slightly roomier than another's. Measure your child's feet regularly (every 2 to 3 months for toddlers) and check the specific brand's size chart when ordering online. The foot length measurement is always more reliable than the size number alone.

What should I do if my child's measured foot size falls between two sizes on the chart?

Go up. Children's feet grow fast. Toddlers can jump a full size in two to three months. A shoe with about 1 cm of space between the longest toe and the front is what you're aiming for. That gives room for growth without being so loose that the shoe slips. If you're stuck between sizes and can't try them on, look for shoes with adjustable straps or laces so you can tighten the fit.

How often should I re-measure my child's feet?

Every 2 to 3 months for babies and toddlers. Their feet grow the fastest, and some toddlers need new shoes 3 to 4 times a year. For school-age kids (roughly 4+), every 4 to 6 months is usually enough. A good rule: always measure before buying new shoes, especially online. Don't assume last season's size still fits.

International Shoe Size Conversion Chart – Children & Baby's

Convert kids' shoe sizes between US, UK, and EU systems with foot length in cm and inches. Covers baby, toddler, little kid, and big kid sizes.

Last updated: February 23, 2026

Quick Kids' Shoe Size Converter

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Baby & Toddler Shoe Sizes (US 1C–9.5C)

Covers newborn through age 3. Click any row to highlight it.

US	UK	EU	Foot Length (cm)	Approx. Age
1C	0.5	16	8.9	0–3 mo
2C	1	17	9.5	3–6 mo
3C	2	18	10.5	6–9 mo
3.5C	2.5	19	10.8	9–12 mo
4C	3	19	11.4	9–12 mo
4.5C	3.5	20	11.7	12 mo
5C	4	20	12.1	12–18 mo
5.5C	4.5	21	12.7	18–24 mo
6C	5	22	13	2 yrs
6.5C	5.5	22	13.3	2 yrs
7C	6	23	14	2 yrs
7.5C	6.5	23	14.3	2–3 yrs
8C	7	24	14.6	2–3 yrs
8.5C	7.5	25	15.2	3 yrs
9C	8	25	15.6	3 yrs
9.5C	8.5	26	15.9	3 yrs

Little Kid Shoe Sizes (US 10C–13.5C)

Covers ages 4 through 7. Click any row to highlight it.

US	UK	EU	Foot Length (cm)	Approx. Age
10C	9	27	16.5	4 yrs
10.5C	9.5	27.5	16.8	4–5 yrs
11C	10	28	17.1	5 yrs
11.5C	10.5	29	17.8	5–6 yrs
12C	11	30	18.1	6 yrs
12.5C	11.5	30.5	18.4	6 yrs
13C	12	31	19.1	6–7 yrs
13.5C	12.5	31.5	19.4	7 yrs

Big Kid / Youth Shoe Sizes (US 1Y–7Y)

Covers ages 7 through 12. US sizing resets to 1 at this stage. Click any row to highlight it.

US	UK	EU	Foot Length (cm)	Approx. Age
1Y	13	32	19.7	7 yrs
1.5Y	14	33	20.3	7–8 yrs
2Y	1	33.5	20.6	8 yrs
2.5Y	1.5	34	21	8–9 yrs
3Y	2	34.5	21.6	9 yrs
3.5Y	2.5	35	21.9	9–10 yrs
4Y	3	36	22.2	10 yrs
4.5Y	3.5	36.5	22.9	10–11 yrs
5Y	4	37	23.2	11 yrs
5.5Y	4.5	37.5	23.5	11 yrs
6Y	5	38	24.1	12 yrs
6.5Y	5.5	38.5	24.4	12 yrs
7Y	6	39	24.8	12+ yrs

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How to Measure Your Child's Foot

Stand on Paper

1.Place a sheet of paper on a hard, flat floor (not carpet).
2.Have your child stand on the paper with their heel against a wall.
3.Make sure they’re wearing the socks they’d normally wear with shoes.
4.Both feet should be flat on the ground, weight evenly distributed.

Mark the Longest Toe

1.Hold a pencil straight up and down (perpendicular to the paper).
2.Mark the tip of the longest toe — this isn’t always the big toe.
3.Don’t press the pencil into the toe. Just mark where it ends.
4.Repeat for the other foot. Kids’ feet are often different sizes.

Measure the Length

1.Measure from the wall edge to your pencil mark in centimeters.
2.Use the larger foot’s measurement to find the right size.
3.Add 1–1.5 cm of wiggle room for growing feet.
4.Compare the measurement to the size chart below.

Sizing Tips for Parents

Measure both feet

Children’s feet are rarely the same length. Always measure both and use the longer foot to pick the size.

Add room for growth

Leave about 1–1.5 cm (roughly a thumb’s width) between the longest toe and the front of the shoe. Shoes that are too tight restrict foot development.

Measure in the afternoon

Feet swell slightly throughout the day. Measuring later in the day gives you the most accurate reading for a comfortable fit.

Re-measure every 2–3 months

Young children’s feet can grow a full size in 2–3 months. Toddlers may need new shoes 3–4 times per year.

Check the fit with socks on

Measure and try shoes with the socks your child normally wears. Thick winter socks versus thin summer socks can shift the fit by half a size.

Don’t rely on size numbers alone

A US 10C from Nike can fit differently than a US 10C from Adidas. Always compare your child’s foot length in cm against the brand’s specific size chart.

FAQ on International Shoe Size Conversion Chart for Children & Babies

Start by measuring your child's foot from heel to longest toe in centimeters or inches. Find that measurement in the foot length column of the chart and read across to get the US, UK, and EU size. Say your toddler's foot is 14.6 cm: that's a US 8C, UK 7, and EU 24. Sizing can shift a bit between brands, so treat the chart as your starting point, not the final word.

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