United Kingdom Size 54-56 to US: 34-36

United Kingdom Size 54-56: Corresponds to a relaxed chest range of 130–134 $\text{cm}$ (51.2–52.8 $\text{in}$), elastic waist range of 116–122 $\text{cm}$ (45.7–48 $\text{in}$), and fit classification Loose Lounge Fit.

US: 34-36: Corresponds to a relaxed chest range of 90–94 $\text{cm}$ (35.4–37 $\text{in}$), elastic waist range of 76–82 $\text{cm}$ (29.9–32.3 $\text{in}$), and fit classification Relaxed / Comfort Fit.