US: 5.5 to Europe Size 18

Cross-market children’s footwear conversion mapping 5.5 specifications into 18 for sneakers, boots, sandals, dress shoes, slippers, and dance shoes.

From Standard & Size

Converted Equivalent

Based on row equivalence: US 5.5 | EU 22 | Foot Length 13.5 cm

Standard cross-walk matching active anthropometric row parameters.

Analyzing Footwear Size Equivalence Across Markets

US: 5.5: Corresponds to a foot length of13.5 $\text{cm}$ (5.3 $\text{in}$ ), estimated age 2-3y, and Mondopoint 135 $\text{mm}$ .

Europe Size 18: Corresponds to a foot length of 10.0 $\text{cm}$ (3.9 $\text{in}$ ), estimated age 6-9m, and Mondopoint 100 $\text{mm}$ .