Here is how to convert your shoe size from Child Size to Adult Size in inches. Manufacturers use different lasts to construct their shoes, and sizing may vary accordingly. Make sure you are standing, wearing the socks or stockings you will wear with your new shoes. Step on a piece of paper and trace around each foot with a pencil.
Converting child's shoe sizes to adult shoe sizes is a fairly simple process. A child's shoe size will generally be two sizes smaller than a women's shoe size. For example, a child who wears a size 3 in children's shoes will wear a size 5 in women's shoes. How do I Convert Kids' Shoe Sizes to Women's Shoe Sizes? By Susan Harper.
Different countries use different numbering systems for shoes; a size "6" in the United States is not a size "6" in England. The same applies to shoes for men, ladies, youth and children. Each group has its own numbering system; a young girl wearing youth size "5" shoes needs to determine the comparable ladies size when purchasing adult shoes.