Size Guide

Size Guide

US Circum. Diameter ISO / EU UK IT East Asia
0 36.5mm (1.44") 11.6mm (0.46") 40 A 0 1
0 ¼ 37.1mm (1.46") 11.8mm (0.47") 40 A 0 1
0 ½ 37.8mm (1.49") 12.0mm (0.47") 40 A 0 1
0 ¾ 38.4mm (1.51") 12.2mm (0.48") 40 A 1/2 0 1
1 39.0mm (1.54") 12.4mm (0.49") 40 B 0 1
1 ¼ 39.7mm (1.56") 12.6mm (0.50") 40 C 0 1
1 ½ 40.3mm (1.59") 12.8mm (0.51") 40 C 1/2 0 1
1 ¾ 41.0mm (1.61") 13.0mm (0.51") 41 D 1 1
2 41.6mm (1.64") 13.2mm (0.52") 42 D 1/2 2 2
2 ¼ 42.2mm (1.66") 13.4mm (0.53") 42 E 2 2
2 ½ 42.9mm (1.69") 13.6mm (0.54") 43 E 1/2 3 3
2 ¾ 43.5mm (1.71") 13.8mm (0.55") 44 F 4 4
3 44.1mm (1.74") 14.1mm (0.55") 44 F 1/2 4 4
3 ¼ 44.8mm (1.76") 14.3mm (0.56") 45 G 5 5
3 ½ 45.4mm (1.79") 14.5mm (0.57") 45 G 1/2 5 5
3 ¾ 46.1mm (1.81") 14.7mm (0.58") 46 H 6 6
4 46.7mm (1.84") 14.9mm (0.59") 47 H 1/2 7 7
4 ¼ 47.3mm (1.86") 15.1mm (0.59") 47 I 7 7
4 ½ 48.0mm (1.89") 15.3mm (0.60") 48 I 1/2 8 8
4 ¾ 48.6mm (1.91") 15.5mm (0.61") 49 J 9 8
5 49.3mm (1.94") 15.7mm (0.62") 49 J 1/2 9 9
5 ¼ 49.9mm (1.96") 15.9mm (0.63") 50 K 10 10
5 ½ 50.5mm (1.99") 16.1mm (0.63") 51 K 1/2 11 10
5 ¾ 51.2mm (2.01") 16.3mm (0.64") 51 L 11 11
6 51.8mm (2.04") 16.5mm (0.65") 52 L 1/2 12 11
6 ¼ 52.4mm (2.06") 16.7mm (0.66") 52 M 12 12
6 ½ 53.1mm (2.09") 16.9mm (0.67") 53 M 1/2 13 13
6 ¾ 53.7mm (2.11") 17.1mm (0.67") 54 N 14 13
7 54.4mm (2.14") 17.3mm (0.68") 54 N 1/2 14 14
7 ¼ 55.0mm (2.16") 17.5mm (0.69") 55 O 15 15
7 ½ 55.6mm (2.19") 17.7mm (0.70") 56 O 1/2 16 15
7 ¾ 56.3mm (2.21") 17.9mm (0.71") 56 P 16 16
8 56.9mm (2.24") 18.1mm (0.71") 57 P 1/2 17 16
8 ¼ 57.5mm (2.27") 18.3mm (0.72") 58 Q 18 17
8 ½ 58.2mm (2.29") 18.5mm (0.73") 58 Q 1/2 18 18
8 ¾ 58.8mm (2.32") 18.7mm (0.74") 59 R 19 18
9 59.5mm (2.34") 18.9mm (0.75") 59 R 1/2 19 19
9 ¼ 60.1mm (2.37") 19.1mm (0.75") 60 S 20 19
9 ½ 60.7mm (2.39") 19.3mm (0.76") 61 S 1/2 21 20
9 ¾ 61.4mm (2.42") 19.5mm (0.77") 61 T 21 21
10 62.0mm (2.44") 19.7mm (0.78") 62 T 1/2 22 21
10 ¼ 62.6mm (2.47") 19.9mm (0.78") 63 U 23 22
10 ½ 63.3mm (2.49") 20.1mm (0.79") 63 U 1/2 23 22
10 ¾ 63.9mm (2.52") 20.3mm (0.80") 64 V 24 23
11 64.5mm (2.54") 20.5mm (0.81") 65 V 1/2 25 24
11 ¼ 65.2mm (2.57") 20.8mm (0.82") 65 W 25 24
11 ½ 65.8mm (2.59") 21.0mm (0.82") 66 W 1/2 26 25
11 ¾ 66.5mm (2.62") 21.2mm (0.83") 66 X 26 25
12 67.1mm (2.64") 21.4mm (0.84") 67 X 1/2 27 26
12 ¼ 67.7mm (2.67") 21.6mm (0.85") 68 Y 28 27
12 ½ 68.4mm (2.69") 21.8mm (0.86") 68 Y 1/2 28 27
12 ¾ 69.0mm (2.72") 22.0mm (0.86") 69 Z 29 28
13 69.7mm (2.74") 22.2mm (0.87") 70 Z1 30 29
13 ¼ 70.3mm (2.77") 22.4mm (0.88") 70 Z1 30 29
13 ½ 70.9mm (2.79") 22.6mm (0.89") 71 Z1 1/2 31 30
13 ¾ 71.6mm (2.82") 22.8mm (0.90") 72 Z2 32 30
14 72.2mm (2.84") 23.0mm (0.90") 72 Z3 32 31
14 ¼ 72.8mm (2.87") 23.2mm (0.91") 73 Z3 1/2 33 32
14 ½ 73.5mm (2.89") 23.4mm (0.92") 73 Z4 33 32
14 ¾ 74.1mm (2.92") 23.6mm (0.93") 74 Z4 34 33
15 74.8mm (2.94") 23.8mm (0.94") 75 Z4 35 33