International Women Shoe's Sizing Conversion Chart
System Size Europe & Thai 35 36 37 38 39 40 U.S.& Canada 5 6 7 8 9 10 U.K. 3 4 5 6 7 8 Inches 8 5/8" 9" 9 1/4" 9 5/8" 10" 10 1/4 " Centimeters 21.9 22.9 23.5 24.4 25.4 26
Shoe's Sizing Marking & Width Chart
Women's Width Europe & Thai Size Width Marking 35 36 37 38 39 40 Narrow N  or  A 2.81" 2.94" 3.06" 3.19" 3.31" 3.44" Medium M  or  B 3.19" 3.31" 3.44" 3.56" 3.69" 3.81" Wide W  or  D 3.56" 3.69" 3.81" 3.94" 4.06" 4.19"