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Juniors' Shoe Size Conversion Chart (8-14 Years)

Youth sizes in the US carry a 'Y' suffix and run from 1Y to 7Y, covering foot lengths of about 200 mm to 250 mm and ages 8 to 14. The scale restarts after kids' 13.5C, so a 1Y is one step larger than 13.5C, not smaller. UK youth sizes are one number lower than US, and EU sizes run 32 to 40. Korean and Japanese labels remain foot length: 220 mm, 230 mm and so on.

The useful trick for this age group is the overlap with adult sizing. A US 5.5Y equals a US men's 5.5 and a US women's 7, and youth versions of the same model are often 20 to 30 percent cheaper. Shoppers buying Nike or Adidas from overseas regularly take advantage of this. Measure foot length, add 8 to 10 mm, and check both the youth and adult columns before deciding.

MenWomenKids
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Sizes vary by brand. We recommend trying them on.

Size chart

Juniors' Shoe Size Conversion Chart (8-14 Years)
USUKEUKR (mm)JP (cm)
1Y13.53220020
1.5Y13320520.5
2Y1.533.521021
2.5Y23421521.5
3Y2.53522022
3.5Y335.522522.5
4Y3.53623023
4.5Y436.523523.5
5Y4.537.523523.5
5.5Y53824024
6Y5.538.524024
6.5Y63924524.5
7Y64025025

Sizes are approximate and vary by brand

Frequently Asked Questions

What is a US 5Y in adult sizes?

US 5Y equals US men's 5 and US women's 6.5, which is EU 37.5, UK 4.5, KR 235 mm or JP 23.5 cm. Youth and men's US numbers match; add 1.5 for the women's equivalent.

At what size do youth shoes end?

Most brands stop at 7Y (about 250 mm, EU 40), with some going to 7.5Y. Beyond that, buy adult men's 7.5 or women's 9. The width is similar to an adult medium.

How do I convert Korean 230 mm to a US youth size?

230 mm foot length corresponds to US 4Y to 4.5Y, UK 3.5 to 4, EU 36 to 36.5, JP 23 cm. For running shoes add 10 mm of room, so a 230 mm foot would wear 240 mm, US 5.5Y to 6Y.

Do youth shoes fit differently from adult shoes of the same length?

Slightly. Youth lasts are a bit narrower at the heel and have less arch support, and cushioning is often thinner. For teens with wide feet, an adult size in the same length may be more comfortable.

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