Europe Size 20 to US: 9-XW

Cross-market children’s footwear width fitting conversion mapping 20 specifications into 9-XW for Brannock infant/child grades, M/W/XW sizing indexes, and ball width dimensions.

From Standard & Size

Converted Equivalent

4-XW

Based on row equivalence: US 4-XW | EU 20 | Foot Length 11.5 cm

Standard cross-walk matching active anthropometric row parameters.

Europe Size 20 to US: 9-XW Width Conversion

Analyzing Shoe Width and Fitting Equivalence Across Markets

Europe Size 20: 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).

US: 9-XW: Corresponds to a foot length of 15.5 $\text{cm}$ (6.1 $\text{in}$ ), ball width of 7.1 $\text{cm}$ (2.8 $\text{in}$ ), grade Extra-Wide (4E), growth margin 0.9 $\text{cm}$ , estimated age 4-5y, Mondopoint 155 $\text{mm}$ , and fit type Toddler Extra-Wide (US 9 / Width 4E).