RING SIZES CHART

US Diam
inches		 Diam
mm		 Circ
inches		 Circ
mm
(European)		 British
1/2 15/32 11.95 1 31/64 37.6 A
1 31/64 12.37 1 17/32 38.9 B
1 1/2 1/2 12.78 1 37/64 40.2 C
2 33/64 13.21 1 41/64 41.5 D
2 1/2 17/32 13.61 1 11/16 42.7 E
3 35/64 14.05 1 47/64 43.4 F
3 1/2 9/16 14.45 1 25/32 44.9  
4 37/64 14.86 1 27/32 46.5 H 1/2
4 1/2 19/32 15.27 1 57/64 47.8 I 1/2
5 5/8 15.70 1 15/16 49 J 1/2
5 1/2 41/64 16.10 1 63/64 50.3 L
6 21/32 16.51 2 3/64 51.5 M
6 1/2 43/64 16.92 2 3/32 52.8 N
7 11/16 17.35 2 9/64 54 O
7 1/2 45/64 17.75 2 13/64 55.3 P
8 23/32 18.19 2 1/4 56.6 Q
8 1/2 47/64 18.53 2 19/64 57.8  
9 3/4 18.89 2 11/32 59.1  
9 1/2 49/64 19.41 2 13/32 60.6  
10 25/32 19.84 2 29/64 62.2 T 1/2
10 1/2 51/64 20.20 2 1/2 63.1 U 1/2
11 13/16 20.68 2 9/16 64.3 V 1/2
11 1/2 53/64 21.08 2 39/64 65.7  
12 27/32 21.49 2 21/32 67.9 Y
12 1/2 55/64 21.89 2 45/64 68.5 Z
13 7/8 22.33 2 49/64 70.1