Ring Finger Size
(US)		 Diameter
(mm)		 Length
(mm)		 2.0 mm 1.6 mm 1.3 mm 1.0 mm .80 mm .60 mm .50 mm
1 12.44 39.09 45.29 44.09 43.09 42.09 41.49 40.89 40.59
1.5 12.85 40.37 46.57 45.37 44.37 43.37 42.77 42.17 41.87
2 13.26 41.64 47.84 46.64 45.64 44.64 44.04 43.44 43.14
2.5 13.66 42.92 49.12 47.92 46.92 45.92 45.32 44.72 44.42
3 14.07 44.20 50.40 49.20 48.20 47.20 46.60 46.00 45.70
3.5 14.47 45.47 51.67 50.47 49.47 48.47 47.87 47.27 46.97
4 14.88 46.75 52.95 51.75 50.75 49.75 49.15 48.55 48.25
4.5 15.29 48.03 54.23 53.03 52.03 51.03 50.43 49.83 49.53
5 15.69 49.30 55.50 54.30 53.30 52.30 51.70 51.10 50.80
5.5 16.10 50.58 56.78 55.58 54.58 53.58 52.98 52.38 52.08
6 16.51 51.86 58.06 56.86 55.86 54.86 54.26 53.66 53.36
6.5 16.91 53.13 59.33 58.13 57.13 56.13 55.53 54.93 54.63
7 17.32 54.41 60.61 59.41 58.41 57.41 56.81 56.21 55.91
7.5 17.73 55.69 61.89 60.69 59.69 58.69 58.09 57.49 57.19
8 18.13 56.96 63.16 61.96 60.96 59.96 59.36 58.76 58.46
8.5 18.54 58.24 64.44 63.24 62.24 61.24 60.64 60.04 59.74
9 18.95 59.52 65.72 64.52 63.52 62.52 61.92 61.32 61.02
9.5 19.35 60.79 66.99 65.79 64.79 63.79 63.19 62.59 62.29
10 19.76 62.07 68.27 67.07 66.07 65.07 64.47 63.87 63.57
10.5 20.16 63.35 69.55 68.35 67.35 66.35 65.75 65.15 64.85
11 20.57 64.63 70.83 69.63 68.63 67.63 67.03 66.43 66.13
11.5 20.98 65.90 72.10 70.90 69.90 68.90 68.30 67.70 67.40
12 21.38 67.18 73.38 72.18 71.18 70.18 69.58 68.98 68.68
12.5 21.79 68.46 74.66 73.46 72.46 71.46 70.86 70.26 69.96
13 22.20 69.73 75.93 74.73 73.73 72.73 72.13 71.53 71.23
13.5 22.60 71.01 77.21 76.01 75.01 74.01 73.41 72.81 72.51
14 23.01 72.29 78.49 77.29 76.29 75.29 74.69 74.09 73.79
14.5 23.42 73.56 79.76 78.56 77.56 76.56 75.96 75.36 75.06
15 23.82 74.84 81.04 79.84 78.84 77.84 77.24 76.64 76.34

Add 0.5 mm to these lengths if the right band is wider than 4 mm.