United Kingdom Size 46 to US: 34

United Kingdom Size 46: Corresponds to a waist size of 115 $\text{cm}$ (46 $\text{in}$), total strap length of 130 $\text{cm}$ (51.2 $\text{in}$), and recommended fit classification Relaxed / Expanded.

US: 34: Corresponds to a waist size of 85 $\text{cm}$ (34 $\text{in}$), total strap length of 100 $\text{cm}$ (39.4 $\text{in}$), and recommended fit classification Standard / Regular.