Asian Kids Shoe Size Converter
Convert Shein, Temu, Japan (cm), and Korea (mm) children's shoe sizes to US Kids, UK, and European standards with zero guesswork.
Direct Answer: How Asian Kids Sizing Works
Asian shoe sizes are primarily based on metric foot measurements: Japan uses centimeters (e.g., 15.0 cm = US 9C), Korea uses millimeters (e.g., 150 mm = US 9C), while Shein, Temu, and Chinese suppliers use modified European sizing numbers (e.g., size 25 = US 9C). Always check if the listing quotes "Foot Length" or "Insole Inner Length" before ordering.
Interactive Asian Sizing Selector
Pick your imported tag size to see Western equivalents
Built for a foot measuring approximately 15.0 cm. For fast-fashion toddler shoes, note that instep height is often flatter than US brands.
Asian Kids Shoe Size Conversion Matrix
Direct correlation between Japanese centimeters, Korean millimeters, Chinese e-commerce sizes, and US/EU systems.
| Japan (cm) | Korea (mm) | China / Shein / Temu | US Kids | UK Kids | EU Size | Inches |
|---|---|---|---|---|---|---|
| 12.0 cm | 120 mm | 20 | 5C | 4.5 | 20.5 | 4.72" |
| 13.0 cm | 130 mm | 21 | 6C | 5.5 | 22 | 5.12" |
| 14.0 cm | 140 mm | 23 | 7.5C | 7 | 24 | 5.51" |
| 15.0 cm | 150 mm | 25 | 9C | 8.5 | 25.5 | 5.91" |
| 16.0 cm | 160 mm | 26 | 10C | 9.5 | 27 | 6.30" |
| 17.0 cm | 170 mm | 28 | 11C | 10.5 | 28.5 | 6.69" |
| 18.0 cm | 180 mm | 29 | 12C | 11.5 | 30 | 7.09" |
| 19.0 cm | 190 mm | 31 | 13C | 12.5 | 31.5 | 7.48" |
| 20.0 cm | 200 mm | 32 | 1Y | 13.5 | 33 | 7.87" |
| 21.0 cm | 210 mm | 34 | 2Y | 1.5 | 34.5 | 8.27" |
| 22.0 cm | 220 mm | 35 | 3Y | 2.5 | 36 | 8.66" |
| 23.0 cm | 230 mm | 36.5 | 4.5Y | 4 | 37.5 | 9.06" |
3 Traps to Avoid When Ordering Children's Shoes from Overseas
Insole vs Foot
Never match your child's exact foot measurement to "Inner Length". The inner length must be 10 mm to 12 mm longer than the bare foot.
Flat Instep Lasts
Asian shoe molds feature lower vertical insteps. If buying for a toddler with chubby arches, choose styles with adjustable velcro straps.
Long Delivery Lag
Overseas shipping can take 3 to 5 weeks. Since toddler feet grow ~1 mm per month, factor shipping time into your sizing decision.
Frequently Asked Questions: Asian Kids Shoe Sizes
Helpful fit allowances, measuring wisdom, and sizing advice for parents.
How do Shein and Temu kids shoe sizes work?
Most shoes sold on Shein, Temu, and AliExpress utilize Chinese or modified European numerical sizing (e.g., sizes 21 to 36). Always verify the internal shoe insole length (labeled in millimeters or centimeters) rather than relying on tag size numbers.
How do Japanese children's shoe sizes work?
Japan uses the Mondopoint metric standard: shoe sizes represent the child's foot length directly in centimeters. For example, a Japanese size 15 equals a 15.0 cm foot length (US Kids Size 8.5C / EU 25).
How do Korean children's shoe sizes work?
Korea sizes footwear in millimeters. A Korean toddler shoe labeled '140' is designed for a foot measuring approximately 140 mm (14.0 cm / US Kids Size 7.5C).
Do Asian imported kids shoes run small or narrow?
Yes. Footwear manufactured for Asian domestic markets typically features a lower instep height and flatter arch contour than Western children's shoes. If your toddler has chubby feet or high arches, size up by 1 full size.
What is the difference between inner length and foot length on Asian sites?
Inner length (insole length) includes the shoe's built-in toe room (typically 10 mm to 12 mm longer than the bare foot). If a product listing quotes 'Foot Length', match it directly to your child's measurement. If it quotes 'Inner Length', ensure it is 10 mm longer than the foot.