Big Kid 4.5Y in Women’s and Men’s Shoe Sizes

A big kid 4.5Y is about a women's US 6 and a men's US 4.5. In UK and EU sizes it is a UK 4 and an EU 37. That is why a big kid's shoe often fits a teenager or an adult with small feet.

Good to know

• US children's sizes run in two scales: C (child) up to 13.5C, then Y (youth) from 1Y. UK sizes restart at 1 after 13.5, so "UK 2" can mean a baby shoe or a junior shoe; this page says which.
• The numbers are the consensus of 7 brands' official charts. Brands disagree by up to a UK size and about 1 cm of foot length, so treat the foot length as approximate and check the brand's own chart.
• To measure, stand your child on paper with the heel against a wall, mark the longest toe and measure in centimetres. Children's feet grow quickly, so measure before every new pair.

Sizes either side

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