US: 12 to Europe Size 36

US: 12: Features a foot length of 27.6 $\text{cm}$ (10.85 $\text{in}$), ball width of 10.3 $\text{cm}$ (4.05 $\text{in}$), heel height of 5 $\text{cm}$ (2 $\text{in}$), and Flat-to-Medium Arch support optimized for women’s footwear.

Europe Size 36: Features a foot length of 22.9 $\text{cm}$ (9 $\text{in}$), ball width of 8.5 $\text{cm}$ (3.3 $\text{in}$), and heel height of 6 $\text{cm}$ (2.4 $\text{in}$), and Medium Arch support optimized for women’s footwear.