Europe Size 18 to US: 4-XW

Cross-market children’s footwear width fitting conversion mapping 18 specifications into 4-XW for Brannock infant/child grades, M/W/XW sizing indexes, and ball width dimensions.

From Standard & Size

Converted Equivalent

2-W

Based on row equivalence: US 2-W | EU 18 | Foot Length 10 cm

Standard cross-walk matching active anthropometric row parameters.

Europe Size 18 to US: 4-XW Width Conversion

Analyzing Shoe Width and Fitting Equivalence Across Markets

Europe Size 18: Corresponds to a foot length of 10 $\text{cm}$ (3.9 $\text{in}$ ), ball width of 4.8 $\text{cm}$ (1.9 $\text{in}$ ), grade Wide (2E), growth margin 0.6 $\text{cm}$ , estimated age 6-9m, Mondopoint 100 $\text{mm}$ , and fit type Infant Wide (US 2 / Width 2E).

US: 4-XW: Corresponds to a foot length of 11.5 $\text{cm}$ (4.5 $\text{in}$ ), ball width of 5.6 $\text{cm}$ (2.2 $\text{in}$ ), grade Extra-Wide (4E), growth margin 0.6 $\text{cm}$ , estimated age 12-18m, Mondopoint 115 $\text{mm}$ , and fit type Infant Extra-Wide (US 4 / Width 4E).