United Kingdom Size 12 to US: M

Cross-market women’s belt and cinch conversion mapping 12 specifications into M.

Analyzing Women’s Belt Size Equivalence Across Markets

United Kingdom Size 12: Corresponds to a waist/hip size of 80 $\text{cm}$ (32 $\text{in}$ ), waist range of 71–81 $\text{cm}$ (28–31.9 $\text{in}$ ), total strap length of 90 $\text{cm}$ (35.4 $\text{in}$ ), and fit classification Standard Waist / Hip.

US: M: Corresponds to a waist/hip size of 80 $\text{cm}$ (32 $\text{in}$ ), waist range of 71–81 $\text{cm}$ (28–31.9 $\text{in}$ ), total strap length of 90 $\text{cm}$ (35.4 $\text{in}$ ), and fit classification Standard Waist / Hip.