Thick and Wide feet choose one size up.

Men's Shoe Size Conversion 

US 6  ( UK 5.5, EU39, insole 23.5cm/9.3inch )

US 7 ( UK 6.5,  EU40  insole 24.4cm/9.6inch )

US 8 ( UK 7.5.  EU41, insole 25.4cm/9.9inch )

US 9 ( UK 8.5,  EU42, insole 26.0cm/10.3inch )

US 10 ( UK 9.5,  EU43, insole 27.0cm/10.6inch )

US 11 ( UK 10.5,  EU44, insole 27.9cm/10.9inch )

US 12 ( UK 11.5,   EU45, insole 28.6cm/11.3inch )

US 13 ( UK 12.5,  EU46, insole 29.4cm/11.6inch )

US 14 ( UK 13.5,  EU47, insole 30.2cm/11.9inch )

US 15 ( UK 14.5,  EU48, insole 31.0cm/12.2inch )