US: 5-N to Europe Size 31

Cross-market children’s footwear width fitting conversion mapping 5-N specifications into 31 for Brannock infant/child grades, M/W/XW sizing indexes, and ball width dimensions.

From Standard & Size

Converted Equivalent

Based on row equivalence: US 5-N | EU 21 | Foot Length 12.5 cm

Standard cross-walk matching active anthropometric row parameters.

US: 5-N to Europe Size 31 Width Conversion

Analyzing Shoe Width and Fitting Equivalence Across Markets

US: 5-N: Corresponds to a foot length of 12.5 $\text{cm}$ (4.9 $\text{in}$ ), ball width of 5.3 $\text{cm}$ (2.1 $\text{in}$ ), grade Narrow (B), growth margin 0.8 $\text{cm}$ , estimated age 18-24m, Mondopoint 125 $\text{mm}$ , and fit type Toddler Narrow (US 5 / Width B).

Europe Size 31: Corresponds to a foot length of 19 $\text{cm}$ (7.5 $\text{in}$ ), ball width of 7.3 $\text{cm}$ (2.85 $\text{in}$ ), grade Medium / Standard (D), growth margin 1 $\text{cm}$ , estimated age 8-9y, Mondopoint 190 $\text{mm}$ , and fit type Little Kid Medium (US 13 / Width D).