Sizes converted to average inches.
 
Old Navy Slippers/Sandals
Baby Girls/Boys
Size 1 or 0-3mths - 3 ⅝  inches
Size 2 or 3-6mths - 3 ¹⁵/₁₆ inches
Size 3 or 6-12mths - 4 ⁵/₁₆ inches
Size 4 or 12-18mths - 4 ⅝  inches
Size 5 or 18-24mths -  5 inches

Old Navy Slippers/Sandals
Toddler Girls/Boys
Size 5 – 5 inches
Size 6 – 5 ¼ inches
Size 7 – 5 ½ inches
Size 8 - 6 inches
Size 9 – 6 ¼ inches
Size 10 – 6 ½ inches
Size 11 - 7 inches
Size 12 – 7 ¼ inches
 
Old Navy Shoes
Toddler Girls/Boys
Size 7 – 6¾ inches
Size 8 - 7 inches
Size 9 – 7 ¼ inches
Size 10 – 7 ½ inches
Size 11 - 8 inches


The Children’s Place Slippers/Sandals
Toddler Girls/Boy
Size 4 – 4 ¾ inches
Size 5 – 5 inches
Size 6 – 5 ¼ inches
Size 7 – 5 ¾ inches
Size 8 – 6 inches
Size 9 – 6 ¼ inches
Size 10 – 6 ¾ inches
Size 11 - 7 inches

The Children’s Place Slippers/Sandals
Youth Girls/Boys
Size 10-11 - 7 ½ inches
Size 12-13 – 8 inches
Size 1-2 – 8 ½ inches
Size 3-4 – 9 inches
Size 5-6 – 9 ½ inches
 
Carter's Slippers/Sandals
Toddler Girls/Boys
Size 5 – 4 ¾ inches
Size 6 – 5 ¼ inches
Size 7 – 5 ½ inches
Size 8 - 5 ¾inches
Size 9 – 6 ¼ inches
Size 10 – 6 ½ inches
Size 11 - 6 ¾ inches
Size 12 – 7 ¼ inches