US: 40 Short to Europe Size 48 Regular

US: 40 Short: Corresponds to a chest girth of 101.6 $\text{cm}$ (40 $\text{in}$), stature length variant Short (Under 173 cm / Under 5’8”), and a trouser drop offset of Drop 6 (waist: 86 $\text{cm}$ (34 $\text{in}$)).

Europe Size 48 Regular: Corresponds to a chest girth of 96.5 $\text{cm}$ (38 $\text{in}$), stature length variant Regular (173–180 cm / 5’8”–5’11”), and a trouser drop offset of Drop 6 (waist: 81 $\text{cm}$ (32 $\text{in}$)).