United Kingdom Size 36 to US: 28

United Kingdom Size 36: Corresponds to a waist size of 90 $\text{cm}$ (36 $\text{in}$), total strap length of 105 $\text{cm}$ (41.3 $\text{in}$), and recommended fit classification Standard / Regular.

US: 28: Corresponds to a waist size of 70 $\text{cm}$ (28 $\text{in}$), total strap length of 85 $\text{cm}$ (33.5 $\text{in}$), and recommended fit classification Snug / Tailored.