Size Chart Rings

Size EU UK USA Internal diameter of the ring Internal circumference of the ring
EU-6 | UK-H | USA-4 6 H 4,0 14,33 mm 45,02 mm
EU-7 | UK-H | USA-4,5 7 H 4,5 14,67 mm 46,09 mm
EU-8 | UK-I | USA-4,5 8 I 4,5 15,00 mm 47,12 mm
EU-9 | UK-J | USA-5 9 J 5,0 15,33 mm 48,16 mm
EU-10 | UK-K | USA-5,5 10 K 5,5 15,67 mm 49,23 mm
EU-11 | UK-L | USA-6 11 L 6,0 16,00 mm 50,27 mm
EU-12 | UK-L | USA-6,5 12 L 6,5 16,33 mm 51,30 mm
EU-13 | UK-M | USA-6,5 13 M 6,5 16,67 mm 52,37 mm
EU-14 | UK-N | USA-7 14 N 7,0 17,00 mm 53,41 mm
EU-15 | UK-O | USA-7,5 15 O 7,5 17,33 mm 54,44 mm
EU-16 | UK-O | USA-8 16 O 8,0 17,67 mm 55,51 mm
EU-17 | UK-P | USA-8 17 P 8,0 18,00 mm 56,55 mm
EU-18 | UK-Q | USA-8,5 18 Q 8,5 18,33 mm 57,59 mm
EU-19 | UK-R | USA-9 19 R 9,0 18,67 mm 58,65 mm
EU-20 | UK-S | USA-9,5 20 S 9,5 19,00 mm 59,69 mm
EU-21 | UK-T | USA-10 21 T 10,0 19,33 mm 60,73 mm
EU-22 | UK-T | USA-10 22 T 10,0 19,67 mm 61,80 mm
EU-23 | UK-U | USA-10,5 23 U 10,5 20,00 mm 62,83 mm
EU-24 | UK-V | USA-11 24 V 11,0 20,33 mm 63,87 mm
EU-25 | UK-V | USA-11,5 25 V 11,5 20,67 mm 64,94 mm
EU-26 | UK-W | USA-12 26 W 12,0 21,00 mm 65,97 mm
EU-27 | UK-X | USA-12 27 X 12,0 21,33 mm 67,01 mm
EU-28 | UK-Y | USA-12,5 28 Y 12,5 21,67 mm 68,08 mm
EU-29 | UK-Z | USA-13 29 Z 13,0 22,00 mm 69,12 mm
EU-30 | UK-Z | USA-13,5 30 Z 13,5 22,33 mm 70,15 mm
EU-31 | UK-Z+ | USA-13,5 31 Z+ 13,5 22,67 mm 71,22 mm
EU-32 | UK-Z+ | USA-14 32 Z+ 14,0 23,00 mm 72,26 mm
EU-33 | UK-Z++ | USA-14,5 33 Z++ 14,5 23,33 mm 73,29 mm
EU-34 | UK-Z++ | USA-15 34 Z++ 15,0 23,50 mm 74,00 mm
EU-35 | USA-15,5 35 ? 15,5 23,90 mm 75,00 mm
EU-36 | USA-16 36 ? 16,0 24,20 mm 76,00 mm

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